[1] Catholic Univ Korea, Coll Med, Dept Internal Med, Seoul, South Korea
[2] Yonsei Univ, Coll Med, Dept Internal Med, Seoul, South Korea
[3] Ewha Womans Univ, Sch Med, Dept Internal Med, Seoul, South Korea
[4] Seoul Natl Univ, Coll Med, Dept Radiol, Seoul, South Korea
[5] Yonsei Univ, Coll Med, Dept Internal Med, Wonju, South Korea
[6] Konkuk Univ, Sch Med, Dept Internal Med, Seoul, South Korea
[7] Univ Ulsan, Coll Med, Dept Internal Med, Seoul, South Korea
[8] Ajou Univ, Sch Med, Dept Internal Med, Suwon, South Korea
[9] Soonchunhyang Univ, Coll Med, Dept Internal Med, Bucheon, South Korea
[10] Sungkyunkwan Univ, Sch Med, Dept Internal Med, Seoul, South Korea
[11] Korea Univ, Coll Med, Dept Prevent Med, Seoul, South Korea
[12] Kyung Hee Univ, Sch Med, Dept Internal Med, Seoul, South Korea
[13] Konkuk Univ, Sch Med, Dept Radiol, Seoul, South Korea