Browsing by Author "Castro Carvalho, C"
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- Use of Etonogestrel Implant Beyond Approved Duration – A Case ReportPublication . Castro Carvalho, C; Silveira Reis, I; Machado, AIThe contraceptive implant is the most effective method of reversible contraception. Observational and trial data indicate that this method remains effective beyond the initially approved duration of use. We report a case of etonogestrel serum levels above the supposed threshold value for ovulation suppression nine years after implant insertion.