1. 24.Keye WR Jr. Initial approach to the infertile couple. In: WR Keye Jr , RJ Chang , RW Rebar , R Soules , eds. Infertility: Evaluation and Treatment. Philadelphia: Saunders, 1995; 76–81.
2. 27.Cedars M. Prediction, detection and evaluation of ovulation. In: WR Keye Jr , RJ Chang , RW Rebar , MR Soules , eds. Infertility: Evaluation and Treatment. Philadelphia: Saunders, 1995; 107–14.
3. 13.World Health Organization. WHO Laboratory Manual for the Examination of Human Semen and Sperm-Cervical Mucus Interaction. 3rd.
4. 15.The President’s Council on Bioethics. Reproduction and Responsibility: The Regulation of New Biotechnologies. www.bioethics.gov.2004.
5. 16.Practice Committee of the American Society for Reproductive Medicine. Interpretation of clinical trial results. Fertil Steril 2004; 82:S-55–S-61.