CONTRACEPTION MULTINATIONAL COMPARATIVE CLINICAL TRIAL OF LONG-ACTING INJECTABLE CONTRACEPTIVES: NORETHISTERONE ENANTHATE GIVEN IN TWO DOSAGE REGIONS AND DEPOT-MEDROXYPROGESTERONE ACETATE. FINAL REPORT. * WHO SPECIAL PROGRAMME OF RESEARCH, DEVELOPMENT AND RESEARCH TRAINING IN HUMAN REPRODUCTION Task Force on Long-Acting Agents for the Regulation of Fertility H.K. Toppozada: Department of Obstetrics and Gynaecology, Shatby Maternity Hospital, Alexandria University, Alexandria, Egypt S. Koetsawang: Family Planning Research Unit, Siriraj Hospital, Mahidol University, Bangkok, Thailand V.E. Aimakhu: Department of Obstetrics and Gynaecology, University of Ibadan, Ibadan, Nigeria T. Khan: National Research Institute of Fertility Control, Karachi, Pakistan A. Pretnar-Darovec: Family Planning Institute, University Clinical Hospital, L~ubljana, Yugoslavia T.K. Chatterjee: Department of Obstetrics and Gynaecology, School of Medicine, University of Zambia, Lusaka, Zambia M.-P. Molitor-Peffer: Mouvement luxembourgeois pour le planning familial, Luxembourg R. Apelo: Reproductive Biology Centre, Department of Obstetric~ and Gynaecology, College of Medicine, University of the Philippines, Manila, The Philippines R. Lichtenberg: Department of Reproduction Biology, National Institute of Nutrition, Mexico City, Mexico P.G. Crosignani: Department of Obstetrics and Gynaecology, Universit~ degli Studi di Milano, Milan, Italy J.C. de Souza: Maternidade Climerio Oliveira, Faculdade de Medicina, Universidade Federal de Bahia, Salvador de Bahia, Brazil M. Garcia Huidubro: Department of Obstetrics and Gynaecology, University of Chile, Hospital J.J. Aguirre, Santiago, Chile A.A. Haspels: Department of Obstetrics and Gynaecology, University of Utrecht, Utrecht, The Netherlands *This investigation received financial support from the Special Programme of Research, Development and Research Training in Human Reproduction, World Health Organization. Submitted for publication March 3, 1983 Accepted for publication June 16, 1983 JULY 1983 VOL. 28 NO. 1 1