- Clinical Instructorship: University of Cincinnati (Complex Spine Surgery)
- Residency: Albert Einstein College of Medicine (Neurological Surgery)
- Fellowship: Albert Einstein College of Medicine (Enfolded Orthopedic Spine Adult and Pediatric Spine Deformity)
- Medical Degree: Temple University School of Medicine
- Bachelor's Degree: Stony Brook University
American Board of Neurological Surgery (Certification Date: 2021-05-08)
Neurological Surgery
- Medical Sciences Building 2454D
- Email nasserri@ucmail.uc.edu
Clinical Interests
Neurosurgery
Arachnoid Cysts
Arnold-Chiari Malformation
Back Injuries
Basilar Impression
Basilar Invagination
Benign Peripheral Nerve Tumor
Bone cancer
Brachial Plexus Injury
Brachial Plexus Neuropathies
Cervical Radiculopathy (pinched nerve)
Cervical Rib Syndrome
Cervical Spondylosis
Cervicitis
Chiari Malformation
Chordoma
Curvature of the Spine
Degenerative Spine Disease
Foot Drop
Herniated Discs
Intervertebral Disc Degeneration
Intervertebral Disc Displacement
Lumbar Radiculopathy
Lumbar Spinal Stenosis
Malignant Peripheral Nerve Sheath Tumor
Meningomyelocele
Neck Pain
Neck/Spine Injury
Nerve Sheath Tumors
Nerve Tumors
Nervous System Tumor
Osteoma
Peripheral Nerve Disorders
Peripheral Nerve Injury
Peripheral Nerve Tumors
Peripheral Nervous System Disease
Peripheral Neuropathy
Pinched Nerve
Schwannoma
Sciatica
Scoliosis (Curvature of the spine)
Spinal Arteriovenous Malformation (AVM)
Spinal Cancers
Spinal Cord Cancer
Spinal Cord Compression
Spinal Cord Injuries
Spinal Cord Tumor
Spinal Deformity
Spinal Disease
Spinal Disorders
Spinal Fluid Leaks
Spinal Fractures
Spinal Fusion
Spinal Injuries
Spinal Instability
Spinal metastases
Spinal Stenosis
Spinal Tumors
Spinal Vascular Malformations
Spinal-Bulbar Muscular Atrophy (SBMA)
Spine Infections
Spine Sarcoma
Spinocerebellar Ataxia (SCA)
Spinocerebellar Degenerations
Thoracic and Lumbar Spine Disorders
Traumatic Spine Fractures
Vertebral metastases
Vertebral Tumor
Peer Reviewed Publications
Bhashyam N, De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Purvis TE, Sciubba DM, Kinon 2017. Thirty-day readmission and reoperation rates after single-level anterior cervical discectomy and fusion versus those after cervical disc replacement Neurosurg Focus., 2017 Feb;42(2):E6. doi: 10.3171/2016.11.FOCUS16407. PMID: 28142261 ,
De la Garza Ramos R, Goodwin CR, Nakhla J, Nasser R, Yassari R, Flamm ES, Bydon A, Colby 2017. The Nationwide Burden of Neurological Conditions Requiring Emergency Neurosurgery Neurosurgery, 2017 Mar 10. doi: 10.1093/neuros/nyx055. PMID: 28327940 ,
De La Garza Ramos R, Nakhla J, Nasser R, Bhashyam N, Kinon M, Yassari R. 2017. Case-control study of risk factors for surgical site infection after three-column osteotomy for spine deformity. Turk Neurosurg, 2017 Jun 2. doi: 10.5137/1019-5149.JTN.20372-17.0 ,
De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Bhashyam N, Kinon MD, Yassari R. 2017. Volume-outcome relationship after 1 and 2 level anterior cervical discectomy and fusion World Neurosurg, 2017 May 19. pii: S1878-8750(17)30759-3. doi: 10.1016/j.wneu.2017.05.060 ,
De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Bhashyam N, Kinon MD, Yassari R. 2017. Volume-outcome relationship after 1 and 2 level anterior cervical discectomy and fusion World Neurosurg, 2017 May 19. pii: S1878-8750(17)30759-3. doi: 10.1016/j.wneu.2017.05.060. PMID: 28532909 ,
De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Purvis TE, Sciubba DM, Kinon M, Yassari R. 2017. Factors associated with prolonged ventilation and reintubation in adult spinal deformity surgery J Clin Neurosci, 2017 May 24. pii: S0967-5868(17)30200-X. doi: 10.1016/j.jocn.2017.04.026 ,
Nakhla J, de la Garza Ramos R, Bhashyam N, Kobets A, Nasser R, Echt M, Lang G, Navarro- 2017. The Impact of kidney disease on acute tubular necrosis and surgical site infection after lumbar fusion. World Neurosurg, 2017 May 24. pii: S1878-8750(17)30787-8. doi: 10.1016/j.wneu.2017.05.088 ,
Altschul D, Kobets A, Nakhla J, Jada A, Nasser R, Kinon MD, Yassari R, Houten J 2016. Postoperativeurinary retention in patients undergoing elective spinal surgery J Neurosurg Spine. 2016 Oct 21:1-6. [Epub ahead of print] PMID: 27767680, ,
Ashayeri K, Nasser R, Nakhla J, Yassari R 2016. The use of a pedicle screw-cortical screw hybrid system for the surgical treatment of a patient with congenital multilevel spinal non-segmentation defect and spinal column deformity: a technical note Eur Spine J. 2016 May 2. PMID: 27137999, ,
De la Garza Ramos R, Jain A, Nakhla J, Nasser R, Puvanesarajah V, Hassanzadeh H, Yassari R, 2016. Postoperative morbidity and mortality after elective anterior cervical fusion in patients with chronic and end-stage renal disease. World Neurosurg., 2016 Jun 29. pii: S1878-8750(16)30481-8. doi: 10.1016/j.wneu.2016.06.096. PMID: 27373417 ,
De la Garza Ramos R, Nakhla J, Nasser R, Jada A, Sciubba DM, Kinon MD, Yassari R. 2016. The impact of hospital teaching status on timing of intervention, inpatient morbidity, and mortality after surgery for vertebral column fractures with spinal cord injury. World Neurosurg, 2016 Nov 30. pii: S1878-8750(16)31259-1. doi: 10.1016/j.wneu.2016.11.111. PMID: 27915066 ,
Gajavelli S, Nakhla J, Nasser R, Yassari R, Weidenheim KM, Graber J. 2016. Ollier disease with anaplastic astrocytoma: A review of the literature and a unique case. Surg Neurol Int., 2016 Sep 1;7(Suppl 23):S607-11. doi: 10.4103/2152-7806.189731. PMID: 27656320 ,
Kinon MD, Nasser R, Nakhla J, Desai R, Moreno JR, Yassari R, Bagley CA 2016. Atlantoaxial Rotatory Subluxation: A Review for the Pediatric Emergency Physician Pediatr Emerg Care. 2016 Oct;32(10):710-716. PMID: 27749670, ,
Kinon MD, Nasser R, Nakhla JP, Adogwa O, Moreno JR, Harowicz M, Verla T, Yassari R, 2016. Predictive parameters for the antecedent development of hip pathology associated with long segment fusions to the pelvis for the treatment of adult spinal deformity. Surg Neurol, 2016 Oct 20;7:93. PMID: 27857857 ,
Legatt AD, Laarakker AS, Nakhla JP, Nasser R, Altschul DJ. 2016. Somatosensory evoked potential monitoring detection of carotid compression during ACDF surgery in a patient with a vascularly isolated hemisphere. J Neurosurg Spine., 2016 Jun 10:1-6. PMID: 27285667 ,
Nakhla, J, Nasser R, Yassari R, Pasquale D, Altschul D 2016. Ruptured anterior spinal artery aneurysm from a herniated cervical disc. A case report and review of the literature Surg Neurol Int. 2016 Jan 28;7:10. doi: 10.4103/2152-7806.175072. eCollection 2016, ,
Nasser R, Ashayeri K, Legatt AD, Houten JK 2016. Intramedullary spindle cell hemangioma: case report J Neurosurg Spine. 2016 Sep;25(3):379-82. doi: 10.3171/2015.11.SPINE15641. PMID:27058496, ,
Nasser R, Drazin D, Nakhla J, Al-Khouja L, Brien E, Baron EM, Kim TT, Patrick Johnson J, 2016. Resection of spinal column tumors utilizing image-guided navigation: a multicenter analysis. Neurosurg Focus., 2016 Aug;41(2):E15. doi: 10.3171/2016.5.FOCUS16136. PMID: 27476839 ,
Nasser R, Nakhla J, Sharif S, Kinon M, Yassari R. 2016. Penetrating thoracic spinal cord injury with ice pick extending into the aorta. A technical note and review of the literature Surg Neurol Int. 2016 Nov 9;7(Suppl 28):S763-S766. PMID: 27904758, ,
Kinon M, Nasser R, Nakhla J, Yassari R 2015. Traumatic pediatric atlantoaxial rotatory subluxation successfully reduced and discharged from the emergency department: a case report Journal of Spine. Accepted Nov 20, 2015., ,
Sandler AL, Tepper OM, Goodrich JT, Nasser R, Biswas A, Abbott R 2014. Use of a customized 3D "basket" to create a solitary split-thickness cranial graft from numerous split fragments in an infant J Neurosurg Pediatr. 2014 Aug;14(2):196-9, ,
Houten JK, Nasser R 2013. Vertebral Anomalies in Siblings with Fanconi Anemia Pediatr Neurosurg. 2013 May 16, ,
Houten JK, Nasser R. 2013. Symptomatic progression of degenerative scoliosis after decompression and limited fusion surgery for lumbar spinal stenosis J Clin Neurosci. 2013 Apr;20(4):613-5., ,
Campbell PG, Yadla S, Nasser R, Malone J, Maltenfort MG, Ratliff JK 2011. Patient comorbidity score predicting the incidence of perioperative complications: assessing the impact of comorbidities on complications in spine surgery J Neurosurg Spine. 2011 Oct 28, ,
Houten JK, Alexandre LC, Nasser R, Wollowick AL 2011. Nerve injury during the transpsoas approach for lumbar fusion J Neurosurg Spine. 2011 Sep;15(3):280-4, ,
Houten JK, Nasser R, Baxi N. 2011. Clinical Assessment of Percutaneous Lumbar Pedicle Screw Placement Using the O-arm Multidimensional Surgical Imaging System Neurosurgery. 2011 Sep 23, ,
Chitale R, Nasser R, Campbell PG, Malone J, Yadla S, Maltenfort MG, Ratliff JK 2010. Accuracy of ICD-9-based and retrospective assessments of perioperative adverse events: Comparison with a prospective assessment of complications in spine surgery. Podium Talk AANS 2010, ,
Nasser R, Yadla S, Maltenfort MG, Anderson DG, Vaccaro AR, Harrop JS, Sharan AD, Ratliff JK 2010. Complications in spine surgery: A literature review Journal of Neurosurgery. Spine 2010 Aug: 13: 144-157, 2010, ,
Yadla S, Malone J, Nasser R, Maltenfort MG, Harrop JS, Sharan AD, Ratliff JK 2010. Incidence of early complications in cervical spine surgery and relation to pre-operative diagnosis: A single-center prospective study Journal of Spinal Disorders & Techniques. 2010 Jan 27, ,
Nasser R, Bookland M, Margules A, Jallo J 2009. Case Illustration of a Patient with Hyperhidrosis Treated by ETS and Outcomes Review of ETS at a Single Institution JHN Journal 4 (1): 16-19, Dec. 2009, ,
Nasser R.; Kosty J.; Shah S.; Wang J.; Cheng J. 12-01-2018. Risk Factors and Prevention of Surgical Site Infections Following Spinal Procedures Global Spine Journal, 8 4_suppl, 44S-48S
De La Garza Ramos R.; Nouri A.; Nakhla J.; Echt M.; Gelfand Y.; Patel S.K.; Nasser R.; Cheng J.S.; Yassari R.; Fehlings M.G. 11-01-2019. Predictors of Return to Normal Neurological Function after Surgery for Moderate and Severe Degenerat Clinical Neurosurgery, 85 5, E917-E923
Nakhla J.; Nasser R.; de la Garza Ramos R.; Kobets A.; Ammar A.; Echt M.; Gelfand Y.; Kinon M.; Yassari R. 11-01-2017. Anterior Lumbar Dural Tear: A Transthecal Route for Primary Closure After Iatrogenic Durotomy World Neurosurgery, 107 , 522-525
Ashayeri K.; Nasser R.; Nakhla J.; Yassari R. 11-01-2016. The use of a pedicle screw–cortical screw hybrid system for the surgical treatment of a patient with European Spine Journal, 25 11, 3760-3764
De la Garza Ramos R.; Jain A.; Nakhla J.; Nasser R.; Puvanesarajah V.; Hassanzadeh H.; Yassari R.; Sciubba D. 11-01-2016. Postoperative Morbidity and Mortality After Elective Anterior Cervical Fusion in Patients with Chron World Neurosurgery, 95 , 480-485
Gajavelli S.; Nakhla J.; Nasser R.; Yassari R.; Weidenheim K.M.; Graber J. 11-01-2016. Ollier disease with anaplastic astrocytoma: A review of the literature and a unique case Surgical Neurology International, 7 24, S607-S611
Legatt A.D.; Laarakker A.S.; Nakhla J.P.; Nasser R.; Altschul D.J. 11-01-2016. Somatosensory evoked potential monitoring detection of carotid compression during ACDF surgery in a Journal of Neurosurgery: Spine, 25 5, 566-571
Body A.M.; Plummer Z.J.; Krueger B.M.; Virojanapa J.; Nasser R.; Cheng J.S.; Prestigiacomo C.J. 10-01-2021. Retrograde ejaculation following anterior lumbar surgery: A systematic review and pooled analysis Journal of Neurosurgery: Spine, 35 4, 427-436
Patel K.K.; Mejia Munne J.C.; Gunness V.R.N.; Hersey D.; Alshafai N.; Sciubba D.; Nasser R.; Gimbel D.; Cheng J.; Nouri A. 10-01-2018. Subacute combined degeneration of the spinal cord following nitrous oxide anesthesia: A systematic r Clinical Neurology and Neurosurgery, 173 , 163-168
Kinon M.; Nasser R.; Nakhla J.; Desai R.; Moreno J.; Yassari R.; Bagley C. 10-01-2016. Atlantoaxial Rotatory Subluxation: A Review for the Pediatric Emergency Physician Pediatric Emergency Care, 32 10, 710-716
De La Garza Ramos R.; Goodwin C.R.; Nakhla J.; Nasser R.; Yassari R.; Flamm E.S.; Bydon A.; Colby G.; Sciubba D.M. 09-01-2017. The nationwide burden of neurological conditions requiring emergency neurosurgery Neurosurgery, 81 3, 422-431
De la Garza Ramos R.; Nakhla J.; Nasser R.; Jada A.; Bhashyam N.; Kinon M.; Yassari R. 09-01-2017. Volume-Outcome Relationship After 1 and 2 Level Anterior Cervical Discectomy and Fusion World Neurosurgery, 105 , 543-548
De la Garza Ramos R.; Nakhla J.; Nasser R.; Jada A.; Purvis T.; Sciubba D.; Kinon M.; Yassari R. 09-01-2017. Factors associated with prolonged ventilation and reintubation in adult spinal deformity surgery Journal of Clinical Neuroscience, 43 , 188-191
Nakhla J.; de la Garza Ramos R.; Bhashyam N.; Kobets A.; Nasser R.; Echt M.; Lang G.; Navarro-Ramirez R.; Jada A.; Kinon M.; Yassari R. 09-01-2017. The Impact of Kidney Disease on Acute Tubular Necrosis and Surgical Site Infection After Lumbar Fusi World Neurosurgery, 105 , 498-502
Nasser R.; Ashayeri K.; Legatt A.; Houten J. 09-01-2016. Intramedullary spindle cell hemangioma: Case report Journal of Neurosurgery: Spine, 25 3, 379-382
Houten J.K.; Alexandre L.C.; Nasser R.; Wollowick A.L. 09-01-2011. Nerve injury during the transpsoas approach for lumbar fusion: Report of 2 cases Journal of Neurosurgery: Spine, 15 3, 280-284
Nasser R.; Yadla S.; Maltenfort M.; Harrop J.; Anderson G.; Vaccaro A.; Sharan A.; Ratliff J. 08-01-2010. Complications in spine surgery a review Journal of Neurosurgery: Spine, 13 2, 141-143
Nakhla J.; Bhashyam N.; De la Garza Ramos R.; Nasser R.; Kinon M.; Yassari R. 07-01-2018. Minimally invasive transpedicular approach for the treatment of central calcified thoracic disc dise European Spine Journal, 27 7, 1575-1585
Krueger B.; Body A.; Jeong W.; Saleh M.; Nasser R.; Cheng J. 06-01-2020. Transient Dorsal Column Dysfunction After Extreme Cervical Deformity Correction: Report of 3 Cases World Neurosurgery, 138 , 223-226
Nouri A.; Kato S.; Badhiwala J.H.; Robinson M.; Mejia Munne J.; Yang G.; Jeong W.; Nasser R.; Gimbel D.A.; Cheng J.S.; Fehlings M.G. 06-01-2020. The Influence of Cervical Spondylolisthesis on Clinical Presentation and Surgical Outcome in Patient Global Spine Journal, 10 4, 448-455
Houten J.; Nasser R. 06-01-2013. Vertebral anomalies in siblings with Fanconi Anemia Pediatric Neurosurgery, 48 4, 264-266
Echt M.; Stock A.; De la Garza Ramos R.; Der E.; Hamad M.; Holland R.; Cezayirli P.; Nasser R.; Yanamadala V.; Yassari R. 05-01-2021. Separation surgery for metastatic epidural spinal cord compression: comparison of a minimally invasi Neurosurgical Focus, 50 5, 1-8
Nouri A.; Patel K.; Montejo J.; Nasser R.; Gimbel D.A.; Sciubba D.M.; Cheng J.S. 05-01-2019. The Role of Vitamin B<inf>12</inf> in the Management and Optimization of Treatment in Pa Global Spine Journal, 9 3, 331-337
Kobets A.; Ammar A.; Nakhla J.; Scoco A.; Nasser R.; Goodrich J.; Abbott R. 05-01-2018. Virtual modeling, stereolithography, and intraoperative CT guidance for the optimization of sagittal Child's Nervous System, 34 5, 965-970
Houten J.; Nasser R. 04-01-2013. Symptomatic progression of degenerative scoliosis after decompression and limited fusion surgery for Journal of Clinical Neuroscience, 20 4, 613-615
Houten J.; Nasser R.; Baxi N. 04-01-2012. Clinical assessment of percutaneous lumbar pedicle screw placement using the O-arm multidimensional Neurosurgery, 70 4, 990-995
Johnson M.D.; Matur A.V.; Asghar F.; Nasser R.; Cheng J.S.; Prestigiacomo C.J. 03-01-2020. Right Versus Left Approach to Anterior Cervical Discectomy and Fusion: An Anatomic Versus Historic D World Neurosurgery, 135 , 135-140
Gibson J.; Nouri A.; Krueger B.; Lakomkin N.; Nasser R.; Gimbel D.; Cheng J. 03-01-2018. Degenerative cervical myelopathy: A clinical review Yale Journal of Biology and Medicine, 91 1, 43-48
De la Garza Ramos R.; Nakhla J.; Nasser R.; Jada A.; Sciubba D.; Kinon M.; Yassari R. 03-01-2017. The Impact of Hospital Teaching Status on Timing of Intervention, Inpatient Morbidity, and Mortality World Neurosurgery, 99 , 140-144
Nouri A.; Matur A.; Pennington Z.; Elson N.; Karim Ahmed A.; Huq S.; Patel K.; Jeong W.; Nasser R.; Tessitore E.; Sciubba D.M.; Cheng J.S. 02-01-2020. Prevalence of anemia and its relationship with neurological status in patients undergoing surgery fo Journal of Clinical Neuroscience, 72 , 252-257
Patel K.K.; Mejia Munne J.C.; Gunness V.R.N.; Hersey D.; Alshafai N.; Sciubba D.; Nasser R.; Gimbel D.; Cheng J.; Nouri A. 02-01-2019. Corrigendum to “Subacute combined degeneration of the spinal cord following nitrous oxide anesthesia Clinical Neurology and Neurosurgery, 177 , 123-124
Altschul D.; Kobets A.; Nakhla J.; Jada A.; Nasser R.; Kinon M.; Yassari R.; Houten J. 02-01-2017. Postoperative urinary retention in patients undergoing elective spinal surgery Journal of Neurosurgery: Spine, 26 2, 229-234
Yadla S.; Malone J.; Campbell P.; Nasser R.; Maltenfort M.; Harrop J.; Sharan A.; Ratliff J. 02-01-2011. Incidence of early complications in cervical spine surgery and relation to preoperative diagnosis: A Journal of Spinal Disorders and Techniques, 24 1, 50-54
De La Garza Ramos R.; Nakhla J.; Nasser R.; Bhashyam N.; Kinon M.; Yassari R. 01-01-2018. Case-control study of risk factors for surgical site infection after three-column osteotomy for spin Turkish Neurosurgery, 28 4, 597-601
Nasser R.; Nakhla J.; Echt M.; De la Garza Ramos R.; Kinon M.; Sharan A.; Yassari R. 01-01-2018. Minimally Invasive Separation Surgery with Intraoperative Stereotactic Guidance: A Feasibility Study World Neurosurgery, 109 , 68-76
Ratliff J.K.; Nasser R. 01-01-2018. Hemivertebrae Resection Operative Techniques: Spine Surgery, , 398-402
Bhashyam N.; De La Garza Ramos R.; Nakhla J.; Jacob J.; Echt M.; Ammar A.; Nasser R.; Yassari R.; Kinon M. 01-01-2017. Impact of body mass index on 30-day outcomes after spinopelvic fixation surgery Surgical Neurology International, 8 1,
Bhashyam N.; Ramos R.D.l.G.; Nakhla J.; Nasser R.; Jada A.; Purvis T.E.; Sciubba D.M.; Kinon M.D.; Yassari R. 01-01-2017. Thirty-day readmission and reoperation rates after single-level anterior cervical discectomy and fus Neurosurgical Focus, 42 2,
Ramos R.D.l.G.; Nakhla J.; Nasser R.; Schulz J.F.; Purvis T.E.; Sciubba D.M.; Kinon M.D.; Yassari R. 01-01-2017. Effect of body mass index on surgical outcomes after posterior spinal fusion for adolescent idiopath Neurosurgical Focus, 43 4,
Kinon M.; Nasser R.; Nakhla J.; Adogwa O.; Moreno J.; Harowicz M.; Verla T.; Yassari R.; Bagley C. 01-01-2016. Predictive parameters for the antecedent development of hip pathology associated with long segment f Surgical Neurology International, 7 1,
Nakhla J.; Nasser R.; Yassari R.; Pasquale D.; Altschul D. 01-01-2016. Ruptured anterior spinal artery aneurysm from a herniated cervical disc. A case report and review of Surgical Neurology International, 7 1,
Nasser R.; Drazin D.; Nakhla J.; Al-Khouja L.; Brien E.; Baron E.; Kim T.; Johnson J.; Yassari R. 01-01-2016. Resection of spinal column tumors utilizing image-guided navigation: A multicenter analysis Neurosurgical Focus, 41 2,
Nasser R.; Nakhla J.; Sharif S.; Kinon M.; Yassari R. 01-01-2016. Penetrating thoracic spinal cord injury with ice pick extending into the aorta. A technical note and Surgical Neurology International, 7 29, S763-S766
Sandler A.; Tepper O.; Goodrich J.; Nasser R.; Biswas A.; Abbott R. 01-01-2014. Use of a customized 3D "basket" to create a solitary split-thickness cranial graft from numerous spl Journal of Neurosurgery: Pediatrics, 14 2, 196-199
Campbell P.; Yadla S.; Nasser R.; Malone J.; Maltenfort M.; Ratliff J. 01-01-2012. Patient comorbidity score predicting the incidence of perioperative complications: Assessing the imp Journal of Neurosurgery: Spine, 16 1, 37-43
Campbell P.; Malone J.; Yadla S.; Chitale R.; Nasser R.; Maltenfort M.; Vaccaro A.; Ratliff J. 01-01-2011. Comparison of ICD-9-based, retrospective, and prospective assessments of perioperative complications Journal of Neurosurgery: Spine, 14 1, 16-22
Nasser R.; Yadla S.; Maltenfort M.; Harrop J.; Anderson D.; Vaccaro A.; Sharan A.; Ratliff J. 01-01-2010. Complications in spine surgery. Journal of neurosurgery. Spine, 13 2, 144-157