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2. World Health Organization. Improving Access to Quality Care in Family Planning. Medical Eligibility Criteria for Initiating and Continuing Use of Contraceptive Methods. Geneva: World Health Organization, 1996, WHO/FRH/FPP/96.9.
3. IMAP statement on emergency contraception;IPPF Med Bull,1994
4. American College of Obstetricians and Gynecologists. Emergency Oral Contraception. ACOG Practice Patterns. Number 3. Washington DC: The American College of Obstetricians and Gynecologists, December 1996.
5. Safety of emergency contraception;Glasier;J Am Med Wom Assoc,1998