@misc{indiciae5048e3bce5af,
  title = {A randomized multicenter study comparing the efficacy and bleeding pattern of a single-rod (Implanon) and a six-capsule (Norplant) hormonal contraceptive implant.},
  author = {S R Zheng and H M Zheng and S Z Qian and G W Sang and R F Kaper},
  year = {1999},
  doi = {10.1016/s0010-7824(99)00053-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/10549446/},
  note = {Source identifier: 10549446}
}