1. Gynecology and Human Reproduction Physiopathology, Department of Obstetrics and Gynecology, DIMEC Sant'Orsola‐Malpighi University Hospital Bologna Italy
2. Obstetrics and Prenatal Medicine Unit Sant'Orsola‐Malpighi University Hospital Bologna Italy
3. Immunohematology and Transfusion Medicine Service Azienda Ospedaliero‐Universitaria Policlinico di Modena Modena Italy