1. International Centre on Birth Defects (ICBD), International Clearinghouse for Birth Defects Surveillance and Research (ICBDSR) Rome Italy
2. National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention Atlanta Georgia USA
3. Spanish Collaborative Study of Congenital Malformations (ECEMC), Unidad de Investigación sobre Anomalías Congénitas (UIAC) Institute of Rare Diseases Research (IIER), Instituto de Salud Carlos III Madrid Spain
4. National Network of Congenital Anomalies of Argentina (RENAC), National Center of Medical Genetics (CNGM), National Administration of Laboratories and Health Institutes (ANLIS), National Ministry of Health Buenos Aires Argentina
5. MiracleFeet Chapel Hill North Carolina USA
6. Oak Ridge Institute for Science and Education Oak Ridge Tennessee USA
7. Latin American Collaborative Study of Congenital Malformations (ECLAMC) at Center for Medical Education and Clinical Research (CEMIC‐CONICET) Buenos Aires Argentina
8. Division of Medical Genetics, Department of Pediatrics University of Utah School of Medicine Salt Lake City Utah USA
9. Department of Epidemiology University of Iowa Iowa City Iowa USA