Zargar-Shoshtari, sara, et al. “Transdermal Delivery of Bioidentical Progesterone With a Steroid 5α-Reductase Inhibitor (Dutasteride): A Pilot Study”. Journal of Pharmacy & Pharmaceutical Sciences, vol. 13, no. 4, Jan. 2011, pp. 626-3, doi:10.18433/J3RW2H.