2Wang C, Nieschlag E, Swerdloff R, Behre HM, Hellstrom W J, et al. International Society of Andrology (ISA); International Society for the Study of Aging Male (ISSAM); European Association of Urology (EAU); European Academy of Andrology (EAA); American Society of Andrology (ASA). Investigation, treatment, and monitoring of late-onset hypogonadism in males: ISA, ISSAM, EAU, EAA, and ASA recommendations. J Andro12009 30: 1-9.
3Bassil N. Late-onset hypogonadism. Med Clin North Am 2011 95: 507-23.
4Wu FC, Tajar A, Beynon JM, Pye SR, Silman A J, et al. Identification of late-onset hypogonadism in middle-aged and elderly men. N Engl J Med 2010; 363: 123-35.
5Bhasin S, Cunningham GR, Hayes F J, Matsumoto AM, Snyder P J, etaL Testosterone therapy in adult men with androgen deficiency syndromes: an endocrine society clinical practice guideline. J Clin Endocrinol Metab 2006; 91: 1995-2010.
6Liverman CT, Blazer DG. Testosterone and Aging: Clinical Research Directions. Washington, DC: National Academies Press; 2004.
7Iwamoto T, Yanase T, Horie H, Namiki M, Okuyama A. Late-onset hypogonadism (LOH) and androgens: validity of the measurement of free testosterone levels in the diagnostic criteria in Japan. Inf J Uro12009; 16: 168-74.
8Sun K, Liang GQ, Chert XF, Ping P, Yao WL, et al. Survey for late-onset hypogonadism among old and middle-aged males in Shanghai communities. Asian JAndro12012; 14: 338-40.
9Heinemann LA, Zimmermann T, Vermeulen A, Thiel C, Hummel W. A new aging males'symptoms (AMS) rating scale. Aging Male 1999; 2: 105-14.
10Diver M J, Imtiaz KE, Ahmad AM, Vora JP, Fraser WD. Diurnal rhythms of serum total, free and bioavailable testosterone and of SHBG in middle-aged men compared with those in young men. Clin Endocrinol (Oxf) 2003; 58: 710-7.
