title: Pregnancy outcomes of twins after in vitro and spontaneous fertilization.
authors.affiliation: Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
authors.forename: S J
authors.initials: SJ
authors.lastname: Choi
authors.forename: H S
authors.initials: HS
authors.lastname: Kim
authors.forename: C R
authors.initials: CR
authors.lastname: Roh
mesh_terms: D005260:Female; D005306:Fertilization / Q000502:physiology*; D005307:Fertilization in Vitro; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009017:Morbidity; D011247:Pregnancy; D011256:Pregnancy Outcome; D011272:Pregnancy, Multiple; D012189:Retrospective Studies; D014427:Twins