Study design and participants
We conducted a national cross-sectional study based on an online survey. French obstetricians were invited to participate during congresses and through national networks. Participants could be licenced obstetricians or specialized residents in their fourth year or higher and were required to have had regular practice in obstetrics in the previous year. This study was approved by the local ethics committee (Aix-Marseille University 2021-04-08-06).