Pregnancy outcomes in women at high risk of preterm birth receiving a vaginal cervical cerclage with, or without, progesterone: A retrospective, secondary analysis of the C-STICH randomised controlled trial data. - Hodgetts Morton, Victoria; Morris, R. Katie; Toozs-Hobson, Philip; Middleton, Lee; Pilarski, Nicole; Bell, Lilah; Hogg, Martha; Man, Rebecca; Israfil-Bayli, Fidan; Shennan, Andrew; Simpson, Nigel; Lees, Christoph; et al. (PLoS Medicine, 2026)