1. Births: final data for 2015;Martin;Natl Vital Stat Rep,2017
2. Births: final data for 2000;Martin;Natl Vital Stat Rep,2002
3. Assisted reproductive technology surveillance—United States, 2000;Wright;MMWR Surveill Summ,2003
4. 2015 Assisted reproductive technology. National summary report,2017
5. Are we ready to eliminate the transfer of fresh embryos in in vitro fertilization?;Barnhart;Fertil Steril,2014