Affiliation: | (1) Samsung Comprehensive Cancer Center, Samsung Medical Center, 50 Irwon, Gangnam-gu, Seoul, 135-750, Korea;(2) Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;(3) Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;(4) Cancer Research Institute, Department of Surgery, College of Medicine, Seoul National University, Seoul, Korea;(5) Department of Medicine, Johns Hopkins University, Baltimore, MD, USA |