Stillbirth rates and their determinants in a national maternity hospital in Phnom Penh, Cambodia in 2017–2020: a cross-sectional assessment with a nested case–control study oleh Aliki Christou, Jackline Mbishi, Mitsuaki Matsui, Lenka Beňová, Rattana Kim, Ayako Numazawa, Azusa Iwamoto, Sophearith Sokhan, Nary Ieng, Thérèse Delvaux