Improved long-acting fertility regulating agents: What are the problems?

This publication has 12 references indexed in Scilit:

• Gregory Pincus and steroidal contraception: A new departure in the history of mankind
  Journal of Steroid Biochemistry, 1979
• Pharmacokinetic and pharmacodynamic effects of small doses of norethisterone released from vaginal rings continuously during 90 days
  Contraception, 1979
• Multinational comparative clinical evaluation of two long-acting injectable contraceptive steroids: Norethisterone oenanthate and medroxyprogesterone acetate: 2. Bleeding patterns and side effects
  Contraception, 1978
• Multinational comparative clinical evaluation of two long-acting injectable contraceptive steroids: Norethisterone oenanthate and medroxyprogesterone acetate 1. Use-effectiveness
  Contraception, 1977
• Metabolic fate of a long-acting injectable estrogen-progestogen contraceptive 1,2
  Contraception, 1973
• A Comparison of the Long‐Acting Contraceptive Agents Norethisterone Oenanthate and Medroxyprogesterone Acetate
  Australian and New Zealand Journal of Obstetrics and Gynaecology, 1971
• Present Status of Injectable Contraceptives: Results of Seven-Years Study
  Fertility and Sterility, 1970
• A clinical evaluation of a monthly injection for conception control
  American Journal of Obstetrics and Gynecology, 1970
• Contraception with an intramuscular estrogen-progestogen preparation administered monthly experience with 4512 cycles of use
  Contraception, 1970
• The introduction of contraception in an urban public hospital
  American Journal of Obstetrics and Gynecology, 1967