1. Triplet pregnancy;Daw;Br J Obstet Gynaecol,1978
2. The improving outcome of triplet pregnancies;Lipitz;AM J OBSTET GYNECOL,1989
3. A survey of 59 triplet pregnancies;Itzkowic;Br J Obstet Gynaecol,1979
4. Birth weight standards for triplets under modern obstetric care in the United States, 1984-1989;Elster;Obstet Gynecol,1991
5. Outcome of pregnancy in 31 triplet gestations;Holcberg;Obstet Gynecol,1982