Guida, M., Bifulco, G., Sardo, A. D. S., Scala, M., Fernandez, L. M. S., & Nappi, C. (2010). Review of the safety, efficacy and patient acceptability of the combined dienogest/estradiol valerate contraceptive pill. Dove Medical Press.

Guida, Maurizio, Giuseppe Bifulco, Attilio Di Spiezio Sardo, Mariamaddalena Scala, Loredana Maria Sosa Fernandez, and Carmine Nappi. Review of the Safety, Efficacy and Patient Acceptability of the Combined Dienogest/estradiol Valerate Contraceptive Pill. Dove Medical Press, 2010.

Guida, Maurizio, et al. Review of the Safety, Efficacy and Patient Acceptability of the Combined Dienogest/estradiol Valerate Contraceptive Pill. Dove Medical Press, 2010.