Institution: | Han Ah Lee, Yoo Ra Lee, Young-Sun Lee, Young Kul Jung, Ji Hoon Kim, Hyung Joon Yim, Yoon Tae Jeen, Jong Eun Yeon, Kwan Soo Byun, Yeon Seok Seo, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, South KoreaHyunggin An, Department of Biostatistics, Korea University Anam Hospital, Seoul 02841, South Korea |