1. Department of Assisted Reproductive Technologies and Fertility Preservation, Jeanne de Flandre Hospital, 59000 Lille, France
2. Department of Assisted Reproductive Technologies and Fertility Preservation, Jean Verdier Hospital, 93140 Bondy, France
3. Faculty of Medicine, University of Sorbonne Paris Nord, 93000 Bobigny, France
4. Faculty of Medicine, University of Lille, 59000 Lille, France