[1] Norwegian Univ Sci & Technol, Dept Dermatol, St Olavs Univ Hosp HF, Inst Canc Res & Mol Med,Fac Med,NTNU, N-7034 Trondheim, Norway
[2] Oslo Univ Hosp, Rikshosp, Dept Surg, Oslo, Norway
[3] Stavanger Univ Hosp, Dept Dermatovenereol, Div Surg, Helse Stavanger HF, Stavanger, Norway
[4] Dr Funks Hudklin, Moss, Norway
[5] Oslo Univ Hosp, Rikshosp, Dept Dermatol, Oslo, Norway
[6] Oslo Univ Hosp, Photodynam Out Patients Clin, Dept Surg, Rikshosp,Aleris Med Ctr, Oslo, Norway
[7] Holdbergsplads Legesenter, Oslo, Norway
[8] Cent Hosp, Forde, Norway