Rehal A, Benko Z, De Paco Matallana C, Syngelaki A, et al. Early vaginal progesterone versus Placebo in Twin Pregnancies for prevention of spontaneous preterm birth (EVENTS): A randomised double-blind trial. Am J Obstet Gynecol 2020 Jun 26. pii: S0002-9378(20)30675.
PMID: 32598909