[1] Hosp Lillebaelt, Dept Paediat, Kolding, Denmark
[2] Otto von Guericke Univ, Malformat Monitoring Ctr Saxony Anhalt, Magdeburg, Germany
[3] Univ Hosp Ctr CHUV, Dept Woman Mother Child, Lausanne, Switzerland
[4] Univ Zagreb, Sch Med, Childrens Hosp Zagreb, Zagreb, Croatia
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Genet, Groningen, Netherlands
[6] Natl Inst Hlth Doutor Ricardo Jorge, Dept Epidemiol, Lisbon, Portugal
[7] Fdn Promot Hlth & Biomed Res Valencian Reg, Rare Dis Res Unit, Valencia, Spain
[8] Univ Leicester, Dept Hlth Sci, Leicester, Leics, England
[9] Directorate Hlth Informat & Res, Tal Pieta, Malta
[10] Med Univ Graz, Graz, Austria
[11] Norwegian Inst Publ Hlth, Div Mental & Phys Hlth, Bergen, Norway
[12] Univ Bergen, Dept Global Publ Hlth & Primary Care, Bergen, Norway
[13] Univ Oxford, Natl Perinatal Epidemiol Unit, Congenital Anomaly Register Oxfordshire Berkshire, Oxford, England
[14] Paris Descartes Univ, Obstet Perinatal & Pediat Epidemiol Res Team Epop, Paris Registry Congenital Anomalies,UMR 1153, Ctr Epidemiol & Stat,Sorbonne Paris Cite,Inserm, Paris, France
[15] Univ Bristol, South West Congenital Anomaly Register, Bristol, Avon, England
[16] Hlth Serv Execut South, Dept Publ Hlth, Dublin, Ireland
[17] Hlth Serv Execut, Dept Publ Hlth, Kilkenny, Ireland
[18] Biodonostia Res Inst, Publ Hlth Div, San Sebastian, Spain
[19] PIH, Antwerp, Belgium
[20] Univ Ferrara, IMER Registry, Emilia Romagna Registry Birth Defects, Ferrara, Italy
[21] Azienda Osped Univ Ferrara, Ferrara, Italy
[22] CNR, Fdn Toscana Gabriele Monasterio, Inst Clin Physiol, Tuscany Registry Congenital Defects, Pisa, Italy
[23] Registre Malformat Congenitales Reunion, St Pierre, Ile De La Reuni, France
[24] Newcastle Univ, Inst Hlth & Soc, Newcastle Upon Tyne, Tyne & Wear, England
[25] Univ Hosp Rennes, Dept Pediat, Brittany Registry Congenital Malformat, Rennes, France
[26] Univ Hosp Martinique, Maison Femme Mere & Enfant, French West Indies Registry, Registre Malformat Antilles REMALAN, Fort De France, France
[27] Publ Hlth Wales, Congenital Anomaly Register & Informat Serv Wales, Cardiff, S Glam, Wales
[28] Inst Pathol & Genet, Ctr Human Genet, Charleroi, Belgium
[29] Univ Hosp Southampton, Fac Med, Southampton, Hants, England
[30] Wessex Clin Genet Serv, Southampton, Hants, England
[31] Univ Med Ctr Mainz, Ctr Child & Adolescence Med, Mainz Model Birth Registry, Mainz, Germany
[32] Khmelnytsky City Childrens Hosp, OMNI Net Ukraine, Khmelnytsky, Ukraine
[33] European Commiss, DG Joint Res Ctr, Ispra, Italy
[34] Queen Mary Univ London, Wolfson Inst Prevent Med, London, England