ANDERSON R.L., GOLDBERG J.D., GOLBUS M.S.: Prenatal diagnosis in multiple gestation: 20 years' experience with amniocentesis. Prenat. Diagn., 1991, 11, 263-270.
AYTOZ A., DE CATTE L., CAMUS M., BONDUELLE M., VAN ASSCHE E., LIEBAERS I., VAN STEIRTEGHEM A., DEVROEY P.: Obstetric outcome after prenatal diagnosis in pregnancies obtained after intracytoplasmic sperm injection. Hum. Reprod., 1998, 13, 2958-2961.
BONDUELLE M., AYTOZ A., VAN ASSCHE E., DEVROEY P., LIEBAERS I., VAN STEIRTEGHEM A.: Incidence of chromosomal aberrations in children born after assisted reproduction through intracytoplasmic sperm injection. Hum. Reprod., 1998, 13, 781-782.
CARON L., TIHY E., DALLAIRE L.: Frequencies of Chromosomal Abnormalities at Amniocentesis: Over 20 Years of Cytogenetic Analyses in One Laboratory. Am. J. Med. Genet., 1999, 82, 149-154.
CUCKLE H.: Down's syndrome screening in twins. J. Med. Screen., 1998, 5, 3-4.
MEYERS C., ADAM R., DUNGAN J., PRENGER V.: Aneuploidy in twin gestations: when is maternal age advanced? Obstet. Gynecol., 1997, 89, 248-251.
RODIS J.F., EGAN J., CRAFFEY A., CIARLEGLIO L., GREENSTEIN R.M., SCORZA W.E.: Calculated risk of chromosomal abnormalities in twin gestations. Obstet. Gynecol., 1990, 76, 1037-1041.
SEBIRE N.J., SNIJDERS R.J.M., SANTIAGO C., PAPA-PANAGIOTOU G., NICOLAIDES K.H.: Management of twin pregnancies with fetal trisomies. Br. J. Obstet. Gynecol., 1997, 104, 220-222.
TAYLOR M.B., ANDERSON R.L., GOLBUS M.S.: One hundred twin pregnancies in a prenatal diagnosis program. Am. J. Med. Genet., 1984, 18, 419-422.
WAPNER R.J., JOHNSON A., DAVIS G., URBAN A., MORGAN P., JACKSON L.: Prenatal Diagnosis in Twin Gestations: A Comparison Between Second-Trimester Amniocentesis and First-Trimester Chorionic Villus Sampling. Obstet. Gynecol., 1993, 82, 49-56.