1. The history of synthetic testosterone;Hoberman;Sci Am,1995
2. Injection, ligation and transplantation: the search for the glandular fountain of youth;Miller;J Urol,2007
3. FDA. Drug safety communication. 2015. Available at: http://www.accessdata.fda.gov/scripts/cder/drugsatfda/index.cfm?fuseaction=Search.Search.
4. Efficacy of changing testosterone gel preparations (Androgel or Testim) among suboptimally responsive hypogonadal men;Grober;Int J Impot Res,2008
5. Testosterone therapy in men with androgen deficiency syndromes: an Endocrine Society clinical practice guideline;Bhasin;J Clin Endocrinol Metab,2010