Brock G, Carrier S, Alarie P, Pommerville P, Casey R, Harris S, Ward R. The Effect of Physician and Patient Education When Combined with Vardenafil Treatment in Canadian Males with Erectile Dysfunction: An Open-Label, Factorial-Designed, Cluster-Randomized Clinical Trial. The Journal of Sexual Medicine. 2008 Mar;5(3):705–15. doi: 10.1111/j.1743-6109.2007.00716.x.
The Effect of Physician and Patient Education When Combined with Vardenafil Treatment in Canadian Males with Erectile Dysfunction: An Open-Label, Factorial-Designed, Cluster-Randomized Clinical Trial