Evaluation of the clinical benefit of permixon® and tamsulosin in severe BPH patients - PERMAL study subset analysis - Debruyne, F; Boyle, P; Da Silva, FC; Gillenwater, JG; Hamdy, FC; Perrin, P; Teillac, P; Vela-Navarrete, R; Raynaud, JP; Schulman, C (Progres En Urologie, 2004)