title: Prediction of preterm births in twin pregnancies. Methodological issues.
authors.affiliation: a Safety Promotion and Injury Prevention Research Center , Shahid Beheshti University of Medical Sciences , Tehran , I.R. Iran.|b Department of Clinical Epidemiology, School of Health , Shahid Beheshti University of Medical Sciences , Tehran , I.R. Iran.
authors.forename: Siamak
authors.initials: S
authors.lastname: Sabour
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D059285:Pregnancy, Twin; D047928:Premature Birth