[1] Sahlgrenska Univ Hosp E, Inst Hlth Women & Children, Dept Clin Genet, S-41685 Gothenburg, Sweden
[2] Glaxo Wellcome Res & Dev Ltd, Med Res Ctr, UK Discovery Genet, Stevenage SG1 2NY, Herts, England
[3] Gothenburg Univ, Inst Selected Clin Sci, Dept Dermatol & Venerol, Sahlgrenska Sjukhuset, S-41345 Gothenburg, Sweden
[4] Glaxo Wellcome Inc, Genet Directorate, Res Triangle Pk, NC 27709 USA