1. The outcome of multiple pregnancy;Doyle,1996
2. The changing pattern of multiple births in the United States: maternal and infant characteristics, 1973 and 1990;Luke;Obstet Gynecol,1994
3. Increasing trends in plural births in the United States;Jewell;Obstet Gynecol,1995
4. Assisted reproductive technology in the United States and Canada: 1994 results generated from the American Society for Reproductive Medicine/Society for Assisted Reproductive Technology Registry;Society for Assisted Reproductive Technology and The American Society for Reproductive Medicine;Fertil Steril,1996
5. Human Fertilization and Embryo Authority Fifth Annual Report-July 1996. Human Fertilization and Embryo Authority, Paxton House, 30 Artillery Lane, London El 7LS, England.