[1] Univ Klinikum Hamburg Eppendorf, Inst Humangenet, Martinistr 52, D-20246 Hamburg, Germany
[2] Univ Med Greifswald, Inst Humangenet, Greifswald, Germany
[3] Uniklin Koln, Inst Humangenet, Cologne, Germany
[4] Univ Klinikum Ulm, Inst Humangenet, Ulm, Germany
[5] Univ Klinikum Dusseldorf, Inst Humangenet, Dusseldorf, Germany