1. Institute of Human Genetics (O.B.-T., K.S., I.P., P.G., W.E., I.M.A.), University of Göttingen, D-37073 Göttingen, Germany
2. Department of Genetics and Evolution (P.G.), Institute of Zoology, University of Jagiellonian, PL-30060 Krakow, Poland
3. Department of Anatomy and Cell Biology (A.M.), University of Giessen, D-35385 Giessen, Germany