1. Predoctoral Training Program in Human Genetics, McKusick‐Nathans Department of Genetic Medicine Johns Hopkins University School of Medicine Baltimore Maryland USA
2. McKusick‐Nathans Department of Genetic Medicine Johns Hopkins University School of Medicine Baltimore Maryland USA
3. Division of Medical Genetics, Department of Pediatrics University of Utah Salt Lake City Utah USA
4. Department of Pediatrics Johns Hopkins University School of Medicine Baltimore Maryland USA
5. Faculty of Medicine, School of Health Sciences University of Iceland Reykjavik Iceland
6. Landspitali University Hospital Reykjavik Iceland