[1] Osaka Univ, Grad Sch Med, Dept Dermatol Integrated Med, Suita, Osaka 5650871, Japan
[2] Osaka Univ, Grad Sch Med, Dept Plast Surg, Suita, Osaka 5650871, Japan
[3] Tokyo Med Univ, Dept Med Educ, Tokyo 1608402, Japan
[4] Toranomon Gen Hosp, Dept Dermatol, Tokyo, Japan
[5] Massachusetts Gen Hosp, Div Dermatopathol, Boston, MA 02114 USA
[6] Harvard Univ, Sch Med, Boston, MA USA