title: Singleton pregnancies are as affected by ovarian hyperstimulation syndrome as twin pregnancies.
abstract: The incidence of ovarian hyperstimulation syndrome (OHSS) did not decrease during the 5 years in which single-embryo transfer was introduced; OHSS is not more frequent in twin than in singleton pregnancies.
authors.affiliation: Centre for Reproductive Medicine, Middelheim Hospital, Antwerp, Belgium. diane.de.neubourg@skynet.be
authors.forename: Diane
authors.initials: D
authors.lastname: De Neubourg
authors.forename: Kathelijne
authors.initials: K
authors.lastname: Mangelschots
authors.forename: Eric
authors.initials: E
authors.lastname: Van Royen
authors.forename: Miet
authors.initials: M
authors.lastname: Vercruyssen
authors.forename: Jan
authors.initials: J
authors.lastname: Gerris
mesh_terms: D004624:Embryo Transfer; D005260:Female; D006801:Humans; D015994:Incidence; D016471:Ovarian Hyperstimulation Syndrome / Q000453:epidemiology* / Q000517:prevention & control*; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins