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Progestogens to prevent preterm birth in twin pregnancies: an individual participant data meta-analysis of randomized trials

Ewoud Schuit*, Sarah Stock, Rolf HH Groenwold, Kimberly Maurel, C Andrew Combs, Thomas Garite, Cathy Y Spong, Elizabeth A Thom, Dwight J Rouse, Steve N Caritis, George R Saade, Julia M Zachary, Jane E Norman, Line Rode, Katharina Klein, Ann Tabor, Elçin Çetingöz, John C Morrison, Everett F Magann, Christian M Briery, Vicente Serra, Alfredo Perales, Juan Meseguer, Anwar H Nassar, Arianne C Lim, Karel GM Moons, Anneke Kwee and Ben Willem J Mol

BMC Pregnancy and Childbirth 2012, 12:13  doi:10.1186/1471-2393-12-13

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