[1] Univ Dusseldorf, Dept Dermatol, D-40225 Dusseldorf, Germany
[2] Univ Dusseldorf, Dept Gen Pediat, D-40225 Dusseldorf, Germany
[3] Univ Dusseldorf, Dept Ophthalmol, D-40225 Dusseldorf, Germany
[4] Univ Dusseldorf, Dept Pedaudiol, D-40225 Dusseldorf, Germany
[5] Univ Dusseldorf, Dept Dent & Endodont, D-40225 Dusseldorf, Germany
[6] Univ Dusseldorf, Inst Human Genet, D-40225 Dusseldorf, Germany
[7] Univ Munich, Dept Dermatol, D-8000 Munich, Germany
[8] Ctr Human Genet, Ingelheim, Germany