1. Estimates of success rates for surgery to correct tubal blockage range from 20% to 50%. See, generally, Walters, L., Human in vitro fertilization: A review of the ethical literature, Hastings Cent. Rep. 9(4):23, 26 (1979).
2. Kolata, G., In vitro fertilization goes commercial, Science 221:1160 (1983). The waiting period is shorter in some treatment programs. Address by Dr. Martin Quigley, Insights into Infertility Symposium, Houston TX (March 10, 1984) (two-to four-month waiting period at University of Texas Medical School at Houston).
3. Grobstein, C., Flower, M., and Mendeloff, J., External human fertilization: An evaluation of policy, Science 222:127–30 (1983)
4. Edwards, R., and Steptoe, P., Current status of in-vitro fertilisation and implantation of human embryos, Lancet 2:1265 (1983).
5. See Walters, L., Ethical aspects of surrogate embryo transfer, JAMA 250:2183, 2184 (1983). See also n. 89 and accompanying text infra.