The rise in multiple births in the United States: who, what, when, where, and why.
Luke
Barbara
B
Department of Epidemiology and Public Health, University of Miami School of Medicine Miami, Florida 33136, USA. bluke@med.miami.edu
Martin
Joyce A
JA
D004522:Educational Status; D005260:Female; D006801:Humans; D017533:Marital Status / Q000706:statistics & numerical data; D008423:Maternal Age; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D011272:Pregnancy, Multiple / Q000208:ethnology / Q000706:statistics & numerical data*; D044469:Racial Groups / Q000706:statistics & numerical data; D043762:Reproductive Behavior / Q000706:statistics & numerical data; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data / Q000639:trends; D014481:United States / Q000453:epidemiology