Postal address Radboud University Nijmegen Medical Centre Department of Human Genetics, 855 P.O. Box 9101 6500 HB Nijmegen The Netherlands	Visiting address Radboud University Nijmegen Medical Centre Geert Grooteplein 10 6525 GA Nijmegen The Netherlands
Telephone/Fax tel:  (+31) 24 361 4017 fax: (+31) 24 366 8752	Secretary Mrs I. Zaalmink agsecretariaat@antrg.umcn.nl Mrs M. Leenders agsecretariaat@antrg.umcn.nl