APA (7th ed.) Citation

Kim, J. W., & Lee, S. Y. (2020). Correlation between radiographic knee osteoarthritis and lifetime cigarette smoking amount in a Korean population: A cross-sectional study. Medicine (Baltimore), 99(26), e20839. https://doi.org/10.1097/MD.0000000000020839

Chicago Style (17th ed.) Citation

Kim, Jung Woo, and Sang Yoon Lee. "Correlation Between Radiographic Knee Osteoarthritis and Lifetime Cigarette Smoking Amount in a Korean Population: A Cross-sectional Study." Medicine (Baltimore) 99, no. 26 (2020): e20839. https://doi.org/10.1097/MD.0000000000020839.

MLA (9th ed.) Citation

Kim, Jung Woo, and Sang Yoon Lee. "Correlation Between Radiographic Knee Osteoarthritis and Lifetime Cigarette Smoking Amount in a Korean Population: A Cross-sectional Study." Medicine (Baltimore), vol. 99, no. 26, 2020, p. e20839, https://doi.org/10.1097/MD.0000000000020839.