1. Isaia GC, Di Stefano M, Borin F, Gola D, Sciolla A (1997) Inquadramento clinico dell’ipogonadismo maschile. In: Molinatti GM, Fontana D (eds) Andrologia. Fisiopatologia e clinica. Verducci Editore, Roma, pp 157–166
2. Carter JN, Tyson JE, Tolis G, Van Vliet S, Faiman C, Friesen HG (1978) Prolactin secreting tumours and hypogonadism. N Engl J Med 299:847–852
3. Rajender S, Monica MG, Walter L, Agarwal A (2011) Thyroid, spermatogenesis, and male infertility. Front Biosci 3:843–855
4. Krassas GE, Poppe K, Glinoer D (2010) Thyroid function and human reproductive health. Endocr Rev 31:702–755
5. Shoham Z, Zalel Y, Jacobs HS et al (1994) The role of growth hormone in male infertility. Clin Endocrinol 41:1–5