[1] Nihon Univ, Sch Med, Dept Pathol & Microbiol, Div Lab Med,Itabashi Ku, 30-1 Ohyaguchi Kamicho, Tokyo 738610, Japan
[2] Fujioka Dermatol Clin, Tokyo, Japan
[3] Izutobu Gen Hosp, Dept Internal Med, Shizuoka, Japan
[4] St Lukes Int Hosp, Dept Dermatol, Tokyo, Japan
[5] Natl Def Med Coll, Dept Dermatol, Saitama, Japan