Watch Out, Here They Come: Multiples!

References 

1. Cooper C. Twins & multiple births. London: Vermilion; 2004;
2. Martin J, Hamilton B, Sutton P, Ventura S, Menacker F, Kirmeyer S. Births: final data for 2004. National Vital Statistics Report. 2006;55:1–102
3. National Center for Health Statistics. Final natality data, 1990-2002. White Plains, NY: March of Dimes Perinatal Data Center; 2004;
4. Society for Assisted Reproductive Technology and the American Society for Reproductive Medicine. Guidelines on the number of embryos transferred. Fertility and Sterility. 2004;82:773–774
   • Abstract
   • Full Text
   • Full-Text PDF (38 KB)
   • CrossRef
5. Tough S, Newburn-Cook C, Johnston D, Svenson L, Rose S, Belik J. Delayed childbearing and its impact on population rate changes in lower birth weight, multiple birth, and preterm delivery. Pediatrics. 2002;109:399–403
   • CrossRef