Pessary or progesterone to prevent preterm birth in women with short cervical length: protocol of the 4–6 year follow-up of a randomised controlled trial (Quadruple-P)
Emilie V J van Limburg Stirum, Larissa I van der Windt, Charlotte E van Dijk, Anneloes L van Baar, Aleid G Leemhuis, Madelon van Wely, Marjon A de Boer, Janneke van 't Hooft, Martijn A Oudijk, Eva Pajkrt
BMJ Open Aug 2022, 12 (8) e064049; DOI: 10.1136/bmjopen-2022-064049
