1. Multiple gestation pregnancy;Hum Reprod,2000
2. Breastfeeding education and support for women with twins or higher order multiples;Whitford;Cochrane Database Syst Rev,2017
3. Hamilton BE, Martin JA, Osterman MJK, Curtin SC, Mathews TJ. Births: Final data for 2014. National Vital Statistics Reports; vol 64 no 12. Hyattsville, MD: National Center for Health Statistics. 2015. Available from: https://www.cdc.gov/nchs/data/nvsr/nvsr64/nvsr64_12.pdf. Centers for Disease Control and Prevention – National Center for Health Statistics. Accessed April 28, 2020.
4. Fertility treatments and multiple births in the United States;Kulkarni;N Engl J Med,2013
5. Number of embryos transferred after in vitro fertilization and good perinatal outcome;Kissin;Obstet Gynecol,2014