[1] German Canc Res Ctr, Mol Genet Epidemiol, Heidelberg, Germany
[2] Inst Valenciano Oncol, Dept Dermatol, Valencia, Spain
[3] Inst Valenciano Oncol, Mol Biol Lab, Valencia, Spain
[4] Inst Valenciano Oncol, Dept Pathol, Valencia, Spain
[5] German Canc Res Ctr, Div Mol Genet Epidemiol, Heidelberg, Germany