Vaginal progesterone for the prevention of preterm birth and adverse perinatal outcomes in twin gestations with a short cervix: an updated individual patient data meta-analysis.

Romero R, Conde-Agudelo A, Rehal A, Da Fonseca E, Brizot ML, Rode L, Serra V, Cetingoz E, Syngelaki A, Tabor A, Perales A, Hassan SS, Nicolaides KH
Ultrasound Obstet Gynecol. 2022 doi: 10.1002/uog.24839