Steven Ory, M.D.
Volume 100, Issue 4, Pages 929-930, October 2013
Multiple pregnancy remains the most common complication of ART. The incidence of high-order multiple (HOM) pregnancies (triplets and greater) increased fivefold within 18 years and the total number peaked a decade ago. The incidence of twins and HOMs remains high but the proportion due to ART is much less than previously suspected, and the relative contribution of other factors greater.
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