References
- Rothe, DJ, Cederqvist LL, Zervoudakis IA, Fuchs F. Organization of amniocentesis for antenatal genetic diagnosis. Acta Obstet Gynecol Scand 1978; 57: 7–11.
- Tabor A, Madsen M, Obel EB, Philip J, Bang J, Noergard-Peterson B. Randomised controlled trial of genetic amniocentesis in 4606 low-risk women. Lancet 1986; i: 1287–93.
- Wilson RD. Early amniocentesis: A clinical review. Prenat Diagn 1995; 15: 1259–73.
- Sundberg K, Jørgensen FS, Tabor A, Bang J. Experience with early amniocentesis. J Perinat Med 1995; 23: 149–58.
- Crandall BF, Kulch P, Khalil T. Risk assessment of amniocentesis between 11 and 15 weeks: Comparison to later amniocentesis controls. Prenat Diagn 1994; 14: 913–19.
- Penso CA, Sandstrom MM, Garber MF, Ladoulis M, Stryker JM, Benacerraf BB. Early amniocentesis: Report of 407 cases with neonatal follow-up. Obstet Gynecol 1990; 76: 1032–6.
- Shalev E, Weiner E, Yanai N, Schneur Y, Cohen H. Comparison of first-trimester transvaginal amniocentesis with chorionic villus sampling and mid-trimester amniocentesis. Prenat Diagn 1994; 14: 279–83.
- Hansson W, Zorn E, Tennant F, Marionos S, Samuels S. Amniocentesis before 15 weeks’ gestation: Outcome, risks, and technical problems. Am J Obstet Gynecol 1987; 156: 1524–31.
- Nicolaides KH, de Lourdes Brizot M, Patel F, Snijders R. Comparison of chorion villus sampling and early amniocentesis for karyotyping in 1,492 singleton pregnancies. Fetal Diagn Ther 1996; 11: 9–15.
- Johnson JAM, Wilson RD, Winsor EJT, Singer J, Dansereau J, Kalousek DK. The early amniocentesis study: A randomized clinical trial of early amniocentesis versus midtrimester amniocentesis. Fetal Diagn Ther 1996; 11: 85–93.
- Schulman LP, Elias S, Phillips OP, Dungan JS, Grevengood C, Simpson JL. Early twin amniocentesis prior to 14 weeks’ gestation. Prenat Diagn 1992; 12: 625–9.
- Buscaglia M, Ghisoni L, Bellotti M, Marconi AM, Zamperini P, Stripparo L et al. Genetic amniocentesis in biamniotic twin pregnancies by a single transabdominal insertion of the needle. Prenat Diagn 1995; 15: 17–19.
- Heidrich SM, Cranley MS. Effect of fetal movement, ultrasound scans, and amniocentesis on maternal-fetal attachment. Nurs Res 1989; 38: 81–4.
- Reading A, Cox D, Sledmere C, Campbell S. Psychological changes over the course of pregnancy: A study of attitudes toward the fetal/neonate. Health Psychol 1984; 3: 211–21.
- Wilson RD, Kendrick V, Wittman BK et al. Spontaneous abortion and pregnancy outcome after normal first-trimester ultrasound examination. Obstet Gynecol 1986; 67: 352–5.
- Cascher KA, Christopher CR, Dysert GA. Spontaneous fetal loss after demonstration of a live fetus in the first trimester. Obstet Gynecol 1987; 70: 827–30.
- Berle P, Weiss E. Spontanabortrate in Abhängigkeit des Zeitpunktes des fetalen Vitälitatsnachweises. Geburtshilfe Frauenheilkd 1990; 50: 959–63.
- National Institute of Child Health and Human Development Amniocentesis Registry, 1978. The safety and accuracy of midtrimester amniocentesis. DHEW publication no. (NIH) 78–190. Washington, DC: United States Department of Health, Education and Welfare, 1978.
- An assessment of the hazards of amniocentesis. Report to the Medical Research Council by their working party on amniocentesis. Br J Obstet Gynaecol 1977; 85: 1–41.
- Anderson RL, Goldberg JD, Golbus MS. Prenatal diagnosis in multiple gestation: 20 years’ experience with amniocentesis. Prenat Diagn 1991; 11: 263–70.
- Sebire NJ, Noble PL, Odibo A, Malligiannis P, Nicolaides KH. Single uterine entry for genetic amniocentesis in twin pregnancies. Ultrasound Obstet Gynecol 1996; 7: 26–31.
- Rodis JF, Egan JFX, Craffey A, Ciarleglio L, Greenstein RM, Scorza WE. Calculated risk of chromosomal abnormalities in twin gestations. Obstet Gynecol 1990; 76: 1037–41.