1. Aono T, Kurachi K, Mizutani S, Hamanka Y, Uozumi T, Nakasima A, Koshiyama K and Matsumoto K (1972) Influence of major surgical stress on plasma levels of testosterone, luteinizing hormone and follicle stimulating hormone in male patients. J Clin Endocrinol Metab 35: 535–542
2. Assmann G and Schulte H (1986) Procam Studie, Panscientia Verlag, Hedingen, Zürich
3. Baier H, Biro G, Weinges KJ (1974) Serum levels of FSH, LH and testosterone in human males. Horm Metab Res 6: 514–516
4. Baker HWG, Burger HG, de Kretser DM, Hudson B (1977) Endocrinology of aging: Pituitary testicular axis. In: James VHT (ed) Proc of the 5th Int Congr of Endocrinol, Excerpta Medica Foundation, Amsterdam, pp 479–483
5. Bartsch W, Becker H, Pinkenburg FA, Krieg M (1979) Hormone blood levels and their interrelationships in normal men and in men with benign prostatic hyperplasia. Acta Endocrinol 90: 727–736