| 2019 | | Olmesartan is not associated with the risk of enteropathy: a Korean nationwide observational cohort study | 박래웅, 윤덕용 |
| 2020 | | Omalizumab Treatment in Patients With Cholinergic Urticaria: A Real-World Retrospective Study in Korea | 박해심, 신유섭, 예영민 |
| 2009 | | Omega-3 불포화지방산과 부정맥 | 황교승 |
| 2016 | | Omental flap for treatment of dead space after left upper lobectomy due to aspergilloma | 박성용, 정준호, 함석진 |
| 2021 | | Omentum preservation as an oncologically comparable and surgically superior alternative to total omentectomy during radical gastrectomy for T3–T4 gastric cancer | 노철규 |
| 2022 | | Omicron: A Heavily Mutated SARS-CoV-2 Variant Exhibits Stronger Binding to ACE2 and Potently Escapes Approved COVID-19 Therapeutic Antibodies | SHAH, MASAUD, 우현구 |
| 2015 | | On the Estimation of Heritability with Family-Based and Population-Based Samples. | 조남한 |
| 2009 | | On the mechanism of internalization of alpha-synuclein into microglia: roles of ganglioside GM1 and lipid raft. | 박상면, 주일로 |
| 2022 | | On-demand Versus Continuous Maintenance Treatment of Gastroesophageal Reflux Disease With Proton Pump Inhibitors: A Systematic Review and Meta-analysis | 이광재 |
| 2023 | | On-demand Versus Continuous Maintenance Treatment With a Proton Pump Inhibitor for Mild Gastroesophageal Reflux Disease: A Prospective Randomized Multicenter Study | 이광재 |
| 2018 | | Once-Weekly Administration of Sustained-Release Growth Hormone in Korean Prepubertal Children with Idiopathic Short Stature: A Randomized, Controlled Phase II Study | 이해상, 황진순 |
| 2016 | | Oncogenic microtubule hyperacetylation through BEX4-mediated sirtuin 2 inhibition | 조혜성, 최경숙 |
| 2009 | | Oncogenic Ras signals through activation of both phosphoinositide 3-kinase and Rac1 to induce c-Jun NH2-terminal kinase-mediated, caspase-independent cell death. | 윤계순 |
| 2017 | | Oncologic Outcome of ypT1-2N0 Rectal Cancer After Neoadjuvant Chemoradiotherapy Compared With pT1-2N0 Rectal Cancer | 김영배, 서광욱, 오승엽 |
| 2013 | | Oncologic outcomes after adjuvant chemotherapy using FOLFOX in MSI-H sporadic stage III colon cancer. | 김도윤, 김영배, 서광욱, 오승엽 |
| 2015 | | Oncologic outcomes following metastasectomy in colorectal cancer patients developing distant metastases after initial treatment. | 서광욱, 오승엽 |
| 2007 | | Oncological Safety of a Metallic Stent for a Left-sided Obstructive Colorectal Carcinoma | 김진홍, 서광욱, 오승엽, 이광재 |
| 1996 | | One Case of Mucinous Ductal Ectasia Diagnosed with Ultrathin Pancreatoxcopy | - |
| 1999 | | One Family of Familial Combined Hyperlipidemia Associated with Various Metabolic Abnormalities | 김현만, 이관우, 정윤석 |
| 2017 | | One-hour postload plasma glucose concentration in people with normal glucose homeostasis predicts future diabetes mellitus: a 12-year community-based cohort study | 조남한 |
