Vardi M, Nini A (2007). „Phosphodiesterase inhibitors for erectile dysfunction in patients with diabetes mellitus”. Cochrane Database Syst Rev (1): CD002187. PMID17253475. doi:10.1002/14651858.CD002187.pub3.
Nurnberg HG, Hensley PL, Heiman JR, Croft HA, Debattista C, Paine S (2008). „Sildenafil Treatment of Women With Antidepressant-Associated Sexual Dysfunction”. JAMA. 300 (4): 395—404. PMID18647982. doi:10.1001/jama.300.4.395.
Vardi M, Nini A (2007). „Phosphodiesterase inhibitors for erectile dysfunction in patients with diabetes mellitus”. Cochrane Database Syst Rev (1): CD002187. PMID17253475. doi:10.1002/14651858.CD002187.pub3.
Nurnberg HG, Hensley PL, Heiman JR, Croft HA, Debattista C, Paine S (2008). „Sildenafil Treatment of Women With Antidepressant-Associated Sexual Dysfunction”. JAMA. 300 (4): 395—404. PMID18647982. doi:10.1001/jama.300.4.395.