[1] GOTHENBURG UNIV,INST MED MICROBIOL,DEPT DERMATOL,S-41124 GOTHENBURG,SWEDEN
[2] GOTHENBURG UNIV,INST MED MICROBIOL,DEPT CLIN IMMUNOL,S-41124 GOTHENBURG,SWEDEN
[3] UNIV UPPSALA,DEPT DERMATOL,S-75105 UPPSALA,SWEDEN
[4] MALMO GEN HOSP,DEPT DERMATOL,S-21401 MALMO,SWEDEN
[5] CENT HOSP KRISTIANSTAD,DEPT DERMATOL,KRISTIANSTAD,SWEDEN