Erectile dysfunction : the scope of the problem of sexual dysfunction in men / Ernst R. Schwarz -- Physiology of erections and pathophysiology of erectile dysfunction / Mohit Khera -- Causes and risk factors for erectile dysfunction / Robert A. Kloner and Thorsten Reffelmann -- Diagnostic evaluation of erectile dysfunction / Raymond M. Bernal -- Treatment for erectile dysfunction / Andrew C. Kramer and Ellen R. Goldmark -- Erectile dysfunction : a harbinger or consequence? / Martin M. Miner -- A multidisciplinary approach to erectile dysfunction / Dioma U. Udeoji and Ernst R. Schwarz -- Erectile dysfunction : a marker of peripheral vascular disease? / Jason C. Huang and Brian H. Annex -- Chronic diseases and erectile dysfunction after organ transplantation / Anita Phan and Ernst R. Schwarz -- Living with erectile dysfunction : the men's and the partners perspective and prevention of erectile dysfunction / Paul D. Thompson and Ernst R. Schwarz -- Ongoing and future research / Anthony J. Bella and Rany Shamloul.