1. Department of Pathology Erlangen University Hospital Friedrich‐Alexander University of Erlangen–Nürnberg Erlangen Germany
2. Kaufbeuren‐Ravensburg Institute of Pathology Ravensburg Germany
3. Department of Reproductive Biology School of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
4. Department of Obstetrics and Gynecology Erlangen University Hospital Friedrich‐Alexander University of Erlangen–Nürnberg Germany
5. Kinderwunschzentrum Amberg Amberg Germany
6. Kinderwunsch im Zentrum Kїz Munich Germany
7. Department of Obstetrics Gynaecology and Reproductive Medicine Flinders University South Australia Australia