Singleton pregnancies are as affected by ovarian hyperstimulation syndrome as twin pregnancies
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.
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PII: S0015-0282(04)02408-2
doi:10.1016/j.fertnstert.2004.07.945
© 2004 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

