title: Age, period, and cohort effects in perinatal epidemiology: implications and considerations.
authors.affiliation: Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY.
authors.forename: Katherine M
authors.initials: KM
authors.lastname: Keyes
authors.forename: Cande V
authors.initials: CV
authors.lastname: Ananth
mesh_terms: D001741:Black or African American / Q000706:statistics & numerical data*; D005260:Female; D047109:Fetal Development / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D007236:Infant, Small for Gestational Age; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000208:ethnology*