Affandi, B., Korver, T., Paul Geurts, T., Coelingh Bennink, H. and Gadroen, W. 1999. A phase II study with a single implant contraceptive containing 3-ketodesogestrel (Implanon®): efficacy and safety. Medical Journal of Indonesia. 8, 1 (Jan. 1999), 25-30. DOI:https://doi.org/10.13181/mji.v8i1.674.