[1] Charite Univ Med Berlin, Ctr Expt & Appl Cutaneous Physiol, Dept Dermatol & Allergy, Berlin, Germany
[2] Clin Psychosomat & Psychotherapy, Dept Psychosomat Dermatol, Giessen, Germany
[3] Univ Marburg, Dept Dermatol, Marburg, Germany
[4] Hammersmith Hosp, Dept Reprod Med, London, England
[5] Univ British Columbia, Div Dermatol, Vancouver, BC V5Z 1M9, Canada