DOI: 10.1055/s-00000072

Seminars in Reproductive Medicine

References

Milsom I, Lete I, Bjertnaes A. et al.
Effects on cycle control and bodyweight of the combined contraceptive ring, NuvaRing, versus an oral contraceptive containing 30 microg ethinyl estradiol and 3 mg drospirenone 
Hum Reprod 2006; 21(9): 2304-2311  

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