Comparison of a phytotherapeutic agent (Permixon) with an alpha-blocker (Tamsulosin) in the treatment of benign prostatic hyperplasia: a 1-year randomized international study - Debruyne,F.; Koch,G.; Boyle,P.; Da Silva,F.C.; Gillenwater,J.G.; Hamdy,F.C. (Eur Urol, 2002)