Affandi, Biran, H.M. Hoesni, R.P. Barus, Rizani Amran, Fitriani Iskandar, N.P. Noerpramono, Lila Dewata, W. Ngartjono, Agus Sopacua, Tjeerd Korver, T.B. Paul Geurts, and H.J.T Coelingh Bennink. 1999. “A Multicentred Phase III Comparative Study Between Single-Implant Containing 3-Ketodesogestrel (Implanon®) and Implants Containing Levonorgestrel (Norplant®) II. Vaginal Bleeding Patterns”. Medical Journal of Indonesia 8 (1):56-61. https://doi.org/10.13181/mji.v8i1.678.