Comparing cervical cerclage, pessary and vaginal progesterone for prevention of preterm birth in women with a short cervix (SuPPoRT): A multicentre randomised controlled trial.
Hezelgrave NL, Suff N, Seed P, Robinson V, Carter J, Watson H, Ridout A, David AL, Pereira S, Hoveyda F, Girling J, Vinayakarao L, Tribe RM, Shennan AH; SuPPoRT Collaborating Team.