| 2021 | Obesity and chronic kidney disease: What should pediatric nephrologists know? | 이정원 | Article |
| 2012 | Occupational exposure to pesticides and nerve conduction studies among Korean farmers | 공경애 | Article |
| 2022 | OCULAR MANIFESTATIONS OF ASP38ALA AND THR59LYS FAMILIAL TRANSTHYRETIN AMYLOIDOSIS | 김아영 | Article |
| 2021 | Ocular symptom can be the first presentation of differentiation syndrome in acute promyelocytic leukemia | 김현진 | Letter |
| 2021 | Old Age and Myocardial Injury in ST-Segment Elevation Myocardial Infarction | 장우진 | Article |
| 2023 | Oleracone F Alleviates Cognitive Impairment and Neuropathology in APPswe/PSEN1dE9 Mice by Reducing the Expression of Vascular Cell Adhesion Molecule and Leukocyte Adhesion to Brain Vascular Endothelial Cells | 오세영 | Article |
| 2023 | Omission of axillary lymph node dissection in patients with ypN plus breast cancer after neoadjuvant chemotherapy: A retrospective multicenter study (KROG 21-06) | 김규보; 박영희 | Article |
| 2023 | Oncogenic signaling pathways and hallmarks of cancer in Korean patients with acral melanoma | 노주영 | Article |
| 2018 | Oncologic outcome of colorectal cancer patients over age 80: a propensity score-matched analysis | 오보영 | Article |
| 2013 | Ondine's curse in Anti-Ri antibody associated paraneoplastic brainstem syndrome | 윤지영 | Letter |
| 2021 | Open Partial Nephrectomy vs. Robot-assisted Partial Nephrectomy for a Renal Tumor Larger than 4 cm: a Propensity Score Matching Analysis | 류호영 | Article |
| 2016 | Opioid sparing effect and safety of nefopam in patient controlled analgesia after laparotomy: A randomized, double blind study | 김원중 | Article |
| 2017 | Optimal Adjuvant Treatment for Curatively Resected Thoracic Esophageal Squamous Cell Carcinoma: A Radiotherapy Perspective | 박경란 | Article |
| 2022 | Optimal Definition of Biochemical Recurrence in Patients Who Receive Salvage Radiotherapy Following Radical Prostatectomy for Prostate Cancer | 정송미 | Article |
| 2023 | Optimal frequency of physical therapy in young children with cerebral palsy: a retrospective pilot study | 서지현 | Article |
| 2022 | Optimal target blood pressure for major adverse cardiovascular and cerebrovascular events in hypertensive patients: A nationwide population-based study | 류동열 | Article |
| 2021 | Optimal treatment strategies for small cell carcinoma of the uterine cervix: A retrospective multi-center study (KROG 19-03) | 김경수 | Article |
| 2019 | Oral Feeding Challenges in Children With Tracheostomy Can Improve Feeding Outcomes, Even With the Finding of Aspiration | 양서연 | Article |
| 2018 | Orthognathic surgery Deteriorates the osseointegration of dental implants: A propensity-matched multicentre cohort study | 김진우 | Article |
| 2021 | Osteonecrosis of the Femoral Head: an Updated Review of ARCO on Pathogenesis, Staging and Treatment | 윤병호 | Review |
