1. O. V. Volkova and T. G. Borovaya, Morphogenetic Bases of Ovarian Development and Function [in Russian], Moscow (1999).
2. Memorandum, Bull. WHO, 69, No. 3, 11–21 (1991).
3. T. B. Semenova, E. I. Gubanova, M. V. Yatsukha, and E. Yu. Rybakova, Zh. Infekts. Pered. Polovym Putem, No. 6, 26–30 (2000).
4. N. D. Yushchuk and Yu. Ya. Vengerov, Lectures in Infectious Diseases [in Russian], Vol. 2, Moscow (1999).
5. L. P. Gartner and J. L. Hiatt, Color Textbook of Histology, Philadelphia (2007).