1. The pharmacodynamics and efficacy of Implanon®, an overview of the data;Croxatto, H.B.; Makarainen, L.;Contraception; A multicentre efficacy and safety study of the single contraceptive implant Implanon®. Implanon® Study Group,1998
2. Implanon®; a review of clinical studies;Edwards, J.; Moore, A.;Br J Fam Plann,1999
3. An economic review of contraceptive implants in the UK;Phillips, C.J.;EBM in Practice,1999
4. Subdermal contraceptive implants (FACT);Oloto, E.; Mascharenhas, L.;Br J Fam Plann,2000
5. Insertion and removal of Implanon®;Mascharenhas, L.;Contraception; 8 Altman DG. Practical statistics for medical research,1998