DOI: 10.1055/s-00000072

Seminars in Reproductive Medicine

References

Diaz S, Pavez M, Miranda P, Robertson DN, Sivin I, Croxatto HB.
A five-year clinical trial of levonorgestrel silastic implants (Norplant TM) 
Contraception 1982; 25(5): 447-456  

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