University of California San Francisco

Publications

  1. Technical skill improvement with surgical preparatory courses: What advantages are reflected in residency?
    Green CA, Huang E, Zhao NW, O'Sullivan PS, Kim E, Chern H
    Am J Surg. 2018 07; 216(1):155-159.; 
    PubMed
  2. Outcomes Analysis of Biologic Mesh Use for Abdominal Wall Reconstruction in Clean-Contaminated and Contaminated Ventral Hernia Repair.
    Sbitany H, Kwon E, Chern H, Finlayson E, Varma MG, Hansen SL
    Ann Plast Surg. 2015 Aug; 75(2):201-4.; 
    PubMed
  3. UCSF Research Profile ">PIGS (Porcine Integrated General Surgery Simulation) Curriculum.
    Hueylan Chern, Edward Kim, Patricia O'Sullivan
    MedEdPORTAL. 2014 Jan 1.; 
    UCSF Research Profile ">UCSF Research Profile
  4. Plasma carotenoids, glutathione S-transferase M1 and T1 genetic polymorphisms, and risk of hepatocellular carcinoma: independent and interactive effects.
    Yu MW, Chiu YH, Chiang YC, Chen CH, Lee TH, Santella RM, Chern HD, Liaw YF, Chen CJ
    Am J Epidemiol. 1999 Apr 01; 149(7):621-9.; 
    PubMed
  5. Initial Experience With Single-Port Robotic Right Colectomies: Results of an Investigator-Initiated Investigational Device Exemption Study Using a Novel Single-Port Robotic Platform.
    Sarin A, Barnes KE, Shui AM, Nakamura Y, Hoffman DB, Romero-Hernandez F, Chern H
    Dis Colon Rectum. 2024 10 01; 67(10):e1600-e1606.; 
    PubMed
  6. Transanal excision of rectal lesions using the single port robotic platform: A video vignette.
    Romero-Hernandez F, Wang JJ, Nakamura Y, Chern H, Sarin A
    Colorectal Dis. 2023 11; 25(11):2275-2279.; 
    PubMed
  7. Robotic training for medical students: feasibility of a pilot simulation curriculum.
    Greenberg AL, Syed SM, Alseidi A, O'Sullivan PS, Chern H
    J Robot Surg. 2023 Jun; 17(3):1029-1038.; 
    PubMed
  8. Transforming Surgical Education through a Resident Robotic Curriculum.
    Green CA, Chern H, Rogers SJ, Reilly LM, O'Sullivan P
    Ann Surg Open. 2021 Sep; 2(3):e076.; 
    PubMed
  9. UCSF Research Profile ">Role of Video Documentation and Video Portfolios for Surgical Trainees.
    Courtney A. Green, Patricia O’Sullivan, Edward Kim, Hueylan Chern
    Journal of the American College of Surgeons. 2017 Oct 1; 225(4):s180-s181.; 
    UCSF Research Profile ">UCSF Research Profile
  10. An objective assessment tool for basic surgical knot-tying skills.
    Huang E, Vaughn CJ, Chern H, O'Sullivan P, Kim E
    J Surg Educ. 2015 Jul-Aug; 72(4):572-6.; 
    PubMed
  11. UCSF Research Profile ">Rectovaginal and Rectourethral Fistulas.
    Hueylan Chern, Madhulika G. Varma
    Seminars in Colon and Rectal Surgery. 2011 Mar 1; 22(1):39-44.; 
    UCSF Research Profile ">UCSF Research Profile
  12. Integrating Video and Objective Performance Data: Development of VORTEX-SPV for Assessing Robotic Lobectomy Skills.
    Murillo AD, Brian R, Gomes C, Foroutani L, Ganjouei AA, Chern H, O'Sullivan PS, Oh DS
    Innovations (Phila). 2026 Jan-Feb; 21(1):64-72.; 
    PubMed
  13. Comparing Peer and Faculty Feedback for Asynchronous Laparoscopic Skill Acquisition.
    Brian R, Cowan B, Knox JA, O'Sullivan PS, Bayne D, Ito T, Lager J, Chern H
    J Surg Educ. 2024 08; 81(8):1154-1160.; 
    PubMed
  14. Artificial intelligence based real-time video ergonomic assessment and training improves resident ergonomics.
    Hamilton BC, Dairywala MI, Highet A, Nguyen TC, O'Sullivan P, Chern H, Soriano IS
    Am J Surg. 2023 11; 226(5):741-746.; 
    PubMed
  15. Surgical Skills Coaches: Preparing for a peer-assisted learning model to train medical students in surgical skills.
    Kim EK, Conroy PC, Johnson CL, Kelly Y, O'Sullivan PS, Chern H, Piper ML
    Am J Surg. 2023 01; 225(1):134-135.; 
    PubMed
  16. A robotic teaching session: separating tool from technique to emphasize a cognitive focused teaching environment.
    Green CA, O'Sullivan PS, Chern H
    J Robot Surg. 2019 Dec; 13(6):735-739.; 
    PubMed
  17. Peer video review and feedback improve performance in basic surgical skills.
    Vaughn CJ, Kim E, O'Sullivan P, Huang E, Lin MY, Wyles S, Palmer BJ, Pierce JL, Chern H
    Am J Surg. 2016 Feb; 211(2):355-60.; 
    PubMed
  18. A better way to teach knot tying: a randomized controlled trial comparing the kinesthetic and traditional methods.
    Huang E, Chern H, O'Sullivan P, Cook B, McDonald E, Palmer B, Liu T, Kim E
    Am J Surg. 2014 Oct; 208(4):690-4.; 
    PubMed
  19. Cost-effectiveness of postremission intensive therapy in patients with acute leukemia.
    Yu YB, Gau JP, You JY, Chern HH, Chau WK, Tzeng CH, Ho CH, Hsu HC
    Ann Oncol. 2007 Mar; 18(3):529-34.; 
    PubMed
  20. What to do when things go wrong: A simulation for high-volume hemorrhage control.
    Cowan B, Kaur M, Drapeau S, Knox J, O'Sullivan P, Chern H, Gomez-Sanchez C
    Surgery. 2025 Nov; 187:109600.; 
    PubMed
  21. UCSF Research Profile ">Development of the Cognitive Load Inventory for Surgical Skills: preliminary validity evidence.
    Anya L. Edwards, Patricia S. O’Sullivan, Joseph H. Rapp, Adnan Alseidi, Hueylan Chern, Justin L. Sewell, Christy Boscardin, Shareef M. Syed
    Global Surgical Education - Journal of the Association for Surgical Education. 2023 Oct 28; 2(1):102.; 
    UCSF Research Profile ">UCSF Research Profile
  22. UCSF Research Profile ">Faculty entrustment of residents in the operating room: the role for surgical simulation.
    Anya L. Greenberg, Katherine E. Barnes, Shareef M. Syed, Joseph H. Rapp, Adnan Alseidi, Patricia S. O’Sullivan, Hueylan Chern
    Global Surgical Education - Journal of the Association for Surgical Education. 2023 Apr 6; 2(1):48.; 
    UCSF Research Profile ">UCSF Research Profile
  23. Comparison of advanced techniques for local excision of rectal lesions: a case series.
    Schwab ME, Hernandez S, Watanaskul S, Chern H, Varma M, Sarin A
    BMC Surg. 2022 Mar 27; 22(1):117.; 
    PubMed
  24. Using Technological Advances to Improve Surgery Curriculum: Experience With a Mobile Application.
    Green CA, Kim EH, O'Sullivan PS, Chern H
    J Surg Educ. 2018 Jul - Aug; 75(4):1087-1095.; 
    PubMed
  25. UCSF Research Profile ">A Microanalysis of Intracorporeal Video from a Robotic Surgery: Investigation into a Surgeon's Professional Vision.
    Courtney A. Green, Hueylan Chern, Ankit Sarin, Patricia O'Sullivan
    Journal of the American College of Surgeons. 2017 Oct 1; 225(4):e149-e150.; 
    UCSF Research Profile ">UCSF Research Profile
  26. UCSF Research Profile ">Martius flap.
    Hueylan Chern, Madhulika Varma
    Operative Surgery of the Colon, Rectum and Anus, Sixth Edition. 2015 May 28; 683-687.; 
    UCSF Research Profile ">UCSF Research Profile
  27. UCSF Research Profile ">How To Teach Knot Tying: A Kinesthetic Approach.
    Edward Kim, Hueylan Chern, Emily Huang, Barnard Palmer
    MedEdPORTAL. 2013 Jan 1.; 
    UCSF Research Profile ">UCSF Research Profile
  28. Microencapsulated pancreatic islets: a pathologic study.
    Leu FJ, Chen CF, Chiang WE, Chern HT, Shian LR, Chung TM, Wang J, Sun AM
    J Formos Med Assoc. 1992 Sep; 91(9):849-58.; 
    PubMed
  29. Consensus guidelines on the bedside assistant skills required in robotic surgery.
    Brian R, Murillo A, Gomes C, Chern H, Oh D, O'Sullivan PS
    Surg Endosc. 2024 11; 38(11):6406-6412.; 
    PubMed
  30. Confronting new challenges: Faculty perceptions of gaps in current laparoscopic curricula in a changing training landscape.
    Charondo LB, Brian R, Syed S, Chern H, Lager J, Alseidi A, O'Sullivan P, Bayne D
    Surg Open Sci. 2023 Dec; 16:1-7.; 
    PubMed
  31. UCSF Research Profile ">Communicating from a distance: medical student perspectives from a robotic bedside assist simulation.
    Anya L. Greenberg, Shareef M. Syed, Adnan A. Alseidi, Patricia S. O’Sullivan, Hueylan Chern
    Global Surgical Education - Journal of the Association for Surgical Education. 2022 Oct 20; 1(1):53.; 
    UCSF Research Profile ">UCSF Research Profile
  32. Vitamin D Levels in Patients with Colorectal Cancer Before and After Treatment Initiation.
    Savoie MB, Paciorek A, Zhang L, Van Blarigan EL, Sommovilla N, Abrams D, Atreya CE, Bergsland EK, Chern H, Kelley RK, Ko A, Laffan A, Sarin A, Varma MG, Venook AP, Van Loon K
    J Gastrointest Cancer. 2019 Dec; 50(4):769-779.; 
    PubMed
  33. UCSF Research Profile ">Vitamin D levels among patients with colorectal cancer (CRC) from the San Francisco Bay area.
    Marissa Barbara Savoie, Alan T Paciorek, Li Zhang, Nili Sommovilla, Chloe Evelyn Atreya, Hueylan Chern, Robin Kate Kelley, Andrew H. Ko, Ankit Sarin, Madhulika G. Varma, Donald I. Abrams, Alan P. Venook, Katherine Van Loon
    Journal of Clinical Oncology. 2017 Feb 1; 35(4_suppl):793-793.; 
    UCSF Research Profile ">UCSF Research Profile
  34. Perineal flap reconstruction following oncologic anorectal extirpation: an outcomes assessment.
    Wang ED, Conkling N, Xu X, Chern H, Finlayson E, Varma MG, Hansen SL, Foster RD, Hoffman WY, Sbitany H
    Plast Reconstr Surg. 2015 Jan; 135(1):176e-184e.; 
    PubMed
  35. UCSF Research Profile ">Reply.
    Hueylan Chern, Joanne Chou, C. Donkor, Jinru Shia, José G. Guillem, Garrett M. Nash, Philip B. Paty, Larissa K. Temple, W. Douglas Wong, Martin R. Weiser
    Journal of the American College of Surgeons. 2011 Jan 1; 212(1):130-131.; 
    UCSF Research Profile ">UCSF Research Profile
  36. Misunderstandings in robotic surgical instruction: An exploratory discourse analysis.
    Brian R, Murillo A, White I, Sterponi L, Chern H, Oh D, O'Sullivan PS
    Am J Surg. 2026 Mar; 253:116783.; 
    PubMed
  37. Vascular Anastomoses and Dissection: A Six-Part Simulation Curriculum for Surgical Residents.
    Brian R, Rodriguez N, Rapp J, Chern H, O'Sullivan P, Gomez-Sanchez C
    MedEdPORTAL. 2024; 20:11406.; 
    PubMed
  38. Experience matters for robotic assistance: an analysis of case data.
    Brian R, Oh D, Ifuku KA, Sarin A, O'Sullivan P, Chern H
    J Robot Surg. 2023 Oct; 17(5):2421-2426.; 
    PubMed
  39. Assessment of Surgeon Performance of Advanced Open Surgical Skills Using a Microskills-Based Novel Curriculum.
    Greenberg AL, Karimzada MM, Brian R, Yap A, Luu HY, Ahmed S, Huang CY, Waits SA, Hirose R, Alseidi A, Rapp JH, O'Sullivan PS, Chern H, Syed SM
    JAMA Netw Open. 2022 09 01; 5(9):e2229787.; 
    PubMed
  40. Is Robotic Surgery Highlighting Critical Gaps in Resident Training?
    Green CA, Abrahamson D, Chern H, O'Sullivan PS
    J Grad Med Educ. 2018 Oct; 10(5):491-493.; 
    PubMed
  41. From novice to master surgeon: improving feedback with a descriptive approach to intraoperative assessment.
    Huang E, Wyles SM, Chern H, Kim E, O'Sullivan P
    PubMed
  42. UCSF Research Profile ">Home Video Curriculum for Basic Surgical Skills.
    Hueylan Chern, Leslie Sheu, Patricia O'Sullivan, Edward Kim
    MedEdPORTAL. 2014 Jan 1.; 
    UCSF Research Profile ">UCSF Research Profile
  43. Genetic polymorphisms of N-acetyltransferase 1 and 2 and risk of cigarette smoking-related bladder cancer.
    Hsieh FI, Pu YS, Chern HD, Hsu LI, Chiou HY, Chen CJ
    Br J Cancer. 1999 Oct; 81(3):537-41.; 
    PubMed
  44. Ambiguity in robotic surgical instruction: lessons from remote and in-person simulation.
    Brian R, Sterponi L, Murillo A, Oh D, Chern H, Silverman E, O'Sullivan P
    Adv Health Sci Educ Theory Pract. 2025 11; 30(5):1387-1401.; 
    PubMed
  45. UCSF Research Profile ">Is participation enough? Impact of simulation curriculum structure on performance of basic surgical skills.
    Connie J. Zhou, Anya L. Edwards, Riley Brian, Patricia S. O’Sullivan, Amy M. Shui, Aly Cortella, Adnan Alseidi, Joseph H. Rapp, Hueylan Chern, Shareef M. Syed
    Global Surgical Education - Journal of the Association for Surgical Education. 2023 Oct 21; 2(1):98.; 
    UCSF Research Profile ">UCSF Research Profile
  46. Beyond watching: Harnessing laparoscopy to increase medical students' engagement with robotic procedures.
    Barnes KE, Brian R, Greenberg AL, Watanaskul S, Kim EK, O'Sullivan PS, Chern H
    Am J Surg. 2023 07; 226(1):143-144.; 
    PubMed
  47. UCSF Research Profile ">Advanced Open Surgical Skill Simulation: Practice, Performance Benchmarking, and Perceptions.
    Riley Brian, Jon Freise, Saira Ahmed, Joseph Lin, Hueylan Chern, Shareef M. Syed
    Journal of the American College of Surgeons. 2021 Nov 1; 233(5):s220-s221.; 
    UCSF Research Profile ">UCSF Research Profile
  48. Current robotic curricula for surgery residents: A need for additional cognitive and psychomotor focus.
    Green CA, Chern H, O'Sullivan PS
    Am J Surg. 2018 Feb; 215(2):277-281.; 
    PubMed
  49. UCSF Research Profile ">Evidence Supporting Use of a Novel Descriptive Tool for Intraoperative Feedback.
    Emily S. Huang, Hueylan Chern, Patricia O'Sullivan
    Journal of the American College of Surgeons. 2017 Oct 1; 225(4):e43.; 
    UCSF Research Profile ">UCSF Research Profile
  50. UCSF Research Profile ">Martius flap.
    P O'Connell, Robert Madoff, Michael Solomon, Hueylan Chern, Madhulika Varma
    Operative Surgery of the Colon, Rectum and Anus, Sixth Edition. 2015 May 28; 683-687.; 
    UCSF Research Profile ">UCSF Research Profile
  51. Leukocyte-depleted blood transfusion is associated with decreased survival in resected early-stage lung cancer.
    Ng T, Ryder BA, Chern H, Sellke FW, Machan JT, Harrington DT, Cioffi WG
    J Thorac Cardiovasc Surg. 2012 Apr; 143(4):815-9.; 
    PubMed
  52. Comparing observed and preferred instruction in robotic surgery.
    Brian R, Murillo A, Oh DS, Chern H, O'Sullivan PS
    Surgery. 2024 10; 176(4):1072-1078.; 
    PubMed
  53. Home practice for robotic surgery: a randomized controlled trial of a low-cost simulation model.
    Wile RK, Brian R, Rodriguez N, Chern H, Cruff J, O'Sullivan PS
    J Robot Surg. 2023 Oct; 17(5):2527-2536.; 
    PubMed
  54. Robotic transanal excision of rectal lesions: expert perspective and literature review.
    Watanaskul S, Schwab ME, Chern H, Varma M, Sarin A
    J Robot Surg. 2023 Apr; 17(2):619-627.; 
    PubMed
  55. Teaching in the robotic environment: Use of alternative approaches to guide operative instruction.
    Green CA, Chu SN, Huang E, Chern H, O'Sullivan P
    Am J Surg. 2020 01; 219(1):191-196.; 
    PubMed
  56. Evaluation of a Surgery-Based Adjunct Course for Senior Medical Students Entering Surgical Residencies.
    Green CA, Vaughn CJ, Wyles SM, O'Sullivan PS, Kim EH, Chern H
    J Surg Educ. 2016 Jul-Aug; 73(4):631-8.; 
    PubMed
  57. UCSF Research Profile ">Perineal Reconstruction Following Anorectal Tumor Resection.
    Eric D. Wang, Nicole Conkling, Xiaoti Xu, Hueylan Chern, Emily Finlayson, Madhulika G. Varma, Scott L. Hansen, Robert D. Foster, William Y. Hoffman, Hani Sbitany
    Plastic & Reconstructive Surgery. 2014 Oct 1; 134(4S-1):136-137.; 
    UCSF Research Profile ">UCSF Research Profile
  58. UCSF Research Profile ">Clinical Staging: Endoscopic Techniques.
    Hueylan Chern, W. Douglas Wong
    Rectal Cancer. 2010 Jan 1; 1-19.; 
    UCSF Research Profile ">UCSF Research Profile
  59. Comparing Peer vs. Near Peer Feedback in an At-Home Laparoscopic Curriculum.
    Cowan B, Brian R, Illangasekare T, Chern H, O'Sullivan P
    J Surg Educ. 2025 10; 82(10):103638.; 
    PubMed
  60. An At-Home Laparoscopic Curriculum for Junior Residents in Surgery, Obstetrics/Gynecology, and Urology.
    Brian R, Bayne D, Ito T, Lager J, Edwards A, Kumar S, Soriano I, O'Sullivan P, Varas J, Chern H
    MedEdPORTAL. 2024; 20:11405.; 
    PubMed
  61. UCSF Research Profile ">Difficult or high risk? Objective task assessment vs. faculty perceptions of surgical skills.
    Anya L. Greenberg, Katherine E. Barnes, Mohammad M. Karimzada, Chiung-Yu Huang, Adnan Alseidi, Joseph H. Rapp, Patricia S. O’Sullivan, Hueylan Chern, Shareef M. Syed
    Global Surgical Education - Journal of the Association for Surgical Education. 2023 Apr 19; 2(1):50.; 
    UCSF Research Profile ">UCSF Research Profile
  62. Robotic repair of perineal hernias: a video vignette and review of the literature.
    Watanaskul S, Schwab ME, Colley A, Chern H, Varma MG, Hoffman WY, Sarin A
    Surg Endosc. 2023 03; 37(3):2290-2294.; 
    PubMed
  63. Microanalysis of video from a robotic surgical procedure: implications for observational learning in the robotic environment.
    Green CA, O'Sullivan PS, Sarin A, Chern H
    J Robot Surg. 2019 Jun; 13(3):449-454.; 
    PubMed