[1] Yonsei Univ, Div Infect Dis, Dept Internal Med, Coll Med, Seoul, South Korea
[2] Catholic Univ Korea, St Vincents Hosp, Div Infect Dis, Dept Internal Med,Coll Med, Seoul, South Korea
[3] Seoul Natl Univ Hosp, Div Infect Dis, Seoul, South Korea
[4] Seoul Natl Univ, Seoul Metropolitan Govt Boramae Med Ctr, Div Infect Dis, Seoul, South Korea
[5] Korea Univ, Div Infect Dis, Coll Med, Seoul, South Korea
[6] Catholic Kwandong Univ, Div Infect Dis, Coll Med, Incheon, South Korea
[7] Seoul Med Ctr, Div Infect Dis, Seoul, South Korea
[8] Natl Med Ctr, Ctr Infect Dis, Seoul, South Korea