Study setting and participants
Participants were mothers, included either alone or with their spouse/partner, recruited in the maternity wards of two general hospitals in south-eastern France: Saint-Joseph Hospital (781 beds, Marseille, ca 5,000 deliveries annually) serving a mixed and less-affluent population, and Sainte-Musse Hospital (736 beds, Toulon, ca 3,000 deliveries annually) serving a more affluent population [Eligibility criteria for participants were: age 18 years and older, residence in one of the two districts of the study area at the time of delivery and the ability to read and speak French. For reasons of feasibility, mothers were excluded if they were COVID-19-positive, if they or their newborn child had a severe medical condition, or if they were discharged within 24 h of delivery for any other reason.