1. Department of Pathology and Laboratory Medicine UCLA School of Medicine Los Angeles California
2. Department of Neurology Albert Einstein College of Medicine Bronx New York
3. Cytogenetics Laboratory Division of Laboratory Medicine & Pathology Departments of Biochemistry & Medical Genetics and Pediatrics & Child Health Diagnostic Services of Manitoba University of Manitoba Winnipeg Manitoba Canada
4. Gynaecology Research Unit Hannover Medical School Hannover Germany
5. Department of Human Genetics UCLA School of Medicine Los Angeles California
6. Molecular Biology Institute UCLA Los Angeles California