Efficacy, tolerability and acceptability of a novel contraceptive vaginal ring releasing etonogestrel and ethinyl oestradiol
Roumen, F.J.M.E. ; Apter, D. ; Mulders, T.M.T. ; Dieben, T.O.M.
Human reproduction (Oxford), 2001-03, Vol.16 (3), p.469-475 [Peer Reviewed Journal]Oxford: Oxford University Press
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