Affiliation: | 1. Department of Statistics, Hankuk University of Foreign Studies, Yongin, Korea;2. Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Seoul, Korea;3. Department of Biostatistics and Bioinformatics, Duke University, Durham, NC, USA;4. Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea |