[1] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Div Infect Dis,Asian Pacific Res Fdn Infect Dis, Seoul 135710, South Korea
[2] Chungnam Natl Univ, Coll Med, Taejon, South Korea
[3] Kangbuk Samsung Hosp, Seoul, South Korea
[4] Dong A Univ Hosp, Pusan, South Korea
[5] Chonnam Natl Univ, Sch Med, Kwangju, South Korea
[6] Kyungpook Natl Univ Hosp, Taejon, South Korea
[7] Sungkyunkwan Univ, Sch Med, Div Infect Dis, Seoul, South Korea
[8] Sungkyunkwan Univ, Sch Med, Dept Lab Med, Seoul, South Korea
[9] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Seoul, South Korea