1. Department of Obstetrics and Gynecology Centro Hospitalar Vila Nova de Gaia Porto Portugal
2. Department of Obstetrics and Gynecology Centro Hospitalar de Vila Real e Trás‐os‐ Montes e Alto Douro Vila Real Portugal
3. Pathology Laboratory of CGC Genetics/Centro de Genética Clínica Porto Portugal
4. Medical School, University of Minho, and ICVS/3B's‐PT Government Associate Laboratory Guimarães Portugal