Felicitas Buena, Ronald S. Swerdloff, Barbara S. Steiner, Preetam Lutchmansingh, Margaret A. Peterson, Murugan R. Pandian, Mirta Galmarini, Shalender Bhasin,
Sexual function does not change when serum testosterone levels are pharmacologically varied within the normal male range Fertility and Sterility. ,vol. 59, pp. 1118- 1123 ,(1993) ,
10.1016/S0015-0282(16)55938-X