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, FC; Gillenwater, JG; Hamdy, FC; Perrin, P; Teillac, P; Vela-Navarrete, R; Raynaud, JP (Progres En Urologie, 2002)