[1] Department of Dermatology,
[2] University of Copenhagen,undefined
[3] Gentofte Hospital,undefined
[4] Niels Andersensvej 65,undefined
[5] DK-2900 Hellerup,undefined
[6] Denmark Tel. +45-3977-3205; Fax +45-3965-2036 e-mail: lisby@dadlnet.dk,undefined