Ernst, E (editor), 2001. The Desktop Guide to Complementary and Alternative Medicine: an evidence based approach. Mosby.
767
Lee, John R, 1999. Natural Progesterone. Second revised edition. Jon Carpenter.
768
Cowan, L.D., Gordis, L., Tonascia, J.A. and Jones, G.S., 1981. Breast cancer incidence in women with a history of progesterone deficiency. Am. J. Epidemiology, 114, 209–217.
