title: The Northwestern University Twin Study. VIII: On the causes and care of multiple pregnancy.
abstract: Recent clinical literature on the causes of twin pregnancy and specific areas of antenatal care are reviewed. Controversial aspects of clinical management are discussed.
authors.affiliation: Department of Obstetrics and Gynecology, Northwestern University Medical School, Chicago, Illinois.
authors.forename: L G
authors.initials: LG
authors.lastname: Keith
authors.forename: M W
authors.initials: MW
authors.lastname: Method
authors.forename: O R
authors.initials: OR
authors.lastname: Depp
authors.forename: D M
authors.initials: DM
authors.lastname: Keith
mesh_terms: D001510:Bed Rest; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011295:Prenatal Care; D011296:Prenatal Diagnosis; D011297:Prenatal Exposure Delayed Effects; D012307:Risk Factors; D014427:Twins; D014463:Ultrasonography; D015053:Zygote