[1] Catholic Univ Korea, Sch Med, Incheon St Marys Hosp, Dept Internal Med,Div Hematol Oncol, Inchon, South Korea
[2] Catholic Univ Korea, Sch Med, Dept Internal Med, Inchon, South Korea
[3] Catholic Univ Korea, Coll Med, Dept Internal Med, Seoul, South Korea
[4] Catholic Univ Korea, Sch Med, Incheon St Marys Hosp, Dept Family Med, Inchon, South Korea
[5] Catholic Univ Korea, Sch Med, Incheon St Marys Hosp, Dept Diagnost Med, Inchon, South Korea
[6] Catholic Univ Korea, Sch Med, Incheon St Marys Hosp, Dept Gen Surg, Inchon, South Korea