1. Center for Ectodermal DysplasiasUniversity Hospital Erlangen Erlangen Germany
2. Department of Gynecology and ObstetricsRWTH Aachen Aachen Germany
3. Department of Gynecology and ObstetricsUniversity of Duisburg‐Essen Essen Germany
4. Department of ObstetricsUniversity Hospital Leipzig Leipzig Germany
5. Frauenärztliche Gemeinschaftspraxis Günzburg‐Ichenhausen Günzburg Germany
6. Cardiff and Vale University Health BoardUniversity Hospital of Wales Cardiff UK
7. Department of Conservative Dentistry and PeriodontologyUniversity Hospital, Ludwig‐Maximilians University Munich Germany
8. Institute of Medical Genetics, School of MedicineCardiff University Cardiff UK