title: How do we explain the association between assisted reproductive technologies and perinatal morbidity?
authors: Division of Reproductive Endocrinology and Infertility, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania.
authors: Kurt T
authors: KT
authors: Barnhart
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data*