Correlation between the number of children born using ART and the number of multiple births in the United States for 2015-2017. Source: Compiled by the author according to National Vital Statistics Reports, Centers of disease control and preventions.

 
 
  Part of: Moskaleva AA (2020) Socio-economic determinants of fertility using assisted reproductive technologies in the Russian Federation regions. Population and Economics 4(4): 19-42. https://doi.org/10.3897/popecon.4.e59062