1Goldstein I,Lue TF,Paolma-Nathan H,et al.Oral Sildenafil in the treatment of erectile dysfunction[].The New England Journal of Medicine.1998
2Morales A,Gingell C,Collins M,et al.Clinical safety of oral Sildenafil citrate in the treatment of erectile dysfunction[].International Journal of Impotence Research.1998
3Ballard SA,Gingell CJ,Tang K,et al.Effects of sildenafil on th relaxation of human corpus cavernosum tissue in vitro and on the activities of cyclic nuclcotide phosphodiesterase isozymes[].Journal d Urologie.1998
4Beavo JA.Cyclic nucleotide phosphodiesterases: functional implications of multiple isoforms[].Physiological Reviews.1995
5NIH consensus Development Panel on Impotence,Impotence. The Journal of The American Medical Association . 1993
6Beavo JA,Conti M and Heaslip RJ.Multiple cyclic nueleotide phosphodiesterases[].Molecular Pharmacology.1994
7Dunea G.Say no to Viagra[].British Medical Journal.1998
8Rajfer J,Aronson WJ,Bush PA,et al.Nitric oxide as a mediator of relaxation of the corpus cavernosum in response to nonadrenergic, noncholinergic neurotransmission[].The New England Journal of Medicine.1992
9Carter AJ.Ballard SA and Naylor AM-Effect of the selective phosphodiesterase type 5 inhibitor sildenafil on erectile function in the anesthetized dog[].Journal d Urologie.1998
10Rajfer J.From the lab to the clinic[].Journal d Urologie.1998
