[1] Oita Univ, Fac Med, Dept Dermatol, Hasama, Yufu 8795593, Japan
[2] Oita Univ, Fac Med, Diagnost Pathol, Hasama, Yufu 8795593, Japan
[3] Oita Univ Hosp, Hosp Infect Control Ctr, Hasama, Yufu 8795593, Japan
[4] Natl Inst Infect Dis, Leprosy Res Ctr, Higashimurayama 1890002, Japan
[5] Natl Nishibeppu Hosp, Dept Internal Med, Beppu, Oita 8740840, Japan