| 2023 | | National Assessment of Opportunities for Improvement in Preventable Trauma Deaths: A Mixed-Methods Study | 권준식, 정경원 |
| 2022 | | National Follow-up Survey of Preventable Trauma Death Rate in Korea | 권준식, 문종환, 정경원, 허요 |
| 1998 | | National Guideline for the Management of Asthma : (4) Allergen Immunotherapy | 박해심 |
| 2017 | | National Surgical Trends for Distal Radius Fractures in Korea | 최완선 |
| 2007 | | National survey for genetic counseling and demands for Professional genetic counselor | 김현주, 정윤석 |
| 2022 | | National Trends in Medical Costs and Prognosis of Acute Ischemic Stroke Patients in Endovascular Thrombectomy Era: Analysis Using Medical Claim Data in Korea | 정우상 |
| 2014 | | Nationwide database of surgical treatment pattern for patients with stress urinary incontinence in Korea. | 최종보 |
| 2020 | | Nationwide External Quality Assessment of SARS-CoV-2 Molecular Testing, South Korea | 이위교 |
| 2023 | | Nationwide Long-Term Growth and Developmental Outcomes of Infants for Congenital Anomalies in the Digestive System and Abdominal Wall Defects With Surgery in Korea | 이장훈 |
| 2003 | | Nationwide Study for Epidemiological Change of Atopic Dermatitis in School Aged Children between 1995 and 2000 and Kindergarten Aged Children in 2003 in Korea | - |
| 2018 | | Nationwide survey of partial fundoplication in Korea: comparison with total fundoplication | 한상욱 |
| 2016 | | Nationwide Survey on Bariatric and Metabolic Surgery in Korea: 2003-2013 Results | 한상욱 |
| 2018 | | Natural course and outcomes of spontaneous isolated celiac artery dissection according to morphological findings on computed tomography angiography: STROBE compliant article | 김보현, 안정환 |
| 2019 | | Natural course of fatty liver in 36,195 South Korean adults | 박진선 |
| 2023 | | Natural course of IgE-mediated food allergy in children | 이수영, 정경욱 |
| 2008 | | Natural History and Affecting Factors on Progression of Prehypertension and Prediabetes | 김수정 |
| 1997 | | Natural History of Chronic Hepatitis Type B throughout Long-term Follow-up | - |
| 2018 | | Natural history of mild aortic valve disease untreated at the time of rheumatic mitral valve replacement | 김도정 |
| 2023 | | Natural History of Nevus Depigmentosus: A Long-term Follow-up Study of 102 Cases | 강희영, 김유찬, 김진철, 이은소 |
| 2012 | | Natural History of Treated New-Onset Epilepsy in Children: A Long-term Follow-up Cohort Study in a Single Center | 김성환, 신승수 |
