[1] Korea Univ, Coll Med, Dept Internal Med, Div Infect Dis, Seoul, South Korea
[2] Vaccine Innovat Ctr KU Med VIC K, Seoul, South Korea
[3] Catholic Kwandong Univ, Int St Marys Hosp, Coll Med, Dept Internal Med, Incheon, South Korea
[4] Hallym Univ, Kangnam Sacred Heart Hosp, Dept Internal Med, Div Infect Dis,Coll Med, Seoul, South Korea
[5] Korea Univ, Korea Univ Guro Hosp, Dept Internal Med, Div Infect Dis,Coll Med, 148 Gurodong Ro, Seoul 08308, South Korea
[6] Ajou Univ, Sch Med, Dept Internal Med, Div Infect Dis, Suwon, South Korea