1. American Society for Reproductive Medicine (1998) Ethical considerations of assisted reproductive technologies, Fertil. Steril., Suppl., 3, 4.
2. American Association of Tissue Banks (1992) Reproductive cells and tissues: standards and technical manual for semen cryobanking. American Association of Tissue Banks, McLean, VA, R1-R37.
3. Asada, H., Sueoka, K., Hashiba, T. et al. (2000) The effect of age and abnormal sperm count on the nondisjunction of spermatozoa. J. Assist. Reprod. Genet., 1, 51–59.
4. Barton, M., Walker, K. and Wiesner, B. (1945) Artificial insemination. Brit. Med. J., 13th January, 40–43.
5. Blyth, E. (1998) Access to genetic origins information in donor-assisted conception – international perspectives. In Blyth, E. Crankshaw, M. and Spiers, J. (eds), Truth and the Child 10 Years on: Information exchange in donor assisted conception, BASW, Birmingham, p. 69–77.