European Journal of Obstetrics & Gynecology and Reproductive Biology European Journal of Obstetrics & Gynecology and Reproductive Biology, Elsevier, 2019, 240, pp.156-160. ⟨10.1016/j.ejogrb.2019.07.001⟩ European Journal of Obstetrics & Gynecology and Reproductive Biology, 2019, 240, pp.156-160. ⟨10.1016/j.ejogrb.2019.07.001⟩