[1] Humboldt Univ, Charite, Klinikum Rudolf Virchow, Inst Humangenet, D-13353 Berlin, Germany
[2] Max Planck Inst Infekt Biol, D-10117 Berlin, Germany
[3] Max Delbruck Ctr Mol Med, D-13125 Berlin, Germany
[4] GSF, Forschungszentrum Neuherberg, Inst Saugetiergenet, D-85758 Oberschleissheim, Germany
[5] Free Univ Berlin, Klinikum Benjamin Franklin, Inst Klin Pharmakol, D-14195 Berlin, Germany