Erectile dysfunction
Erectile dysfunction (ED) is a sexual disorder characterized by the inability to develop or maintain prolonged erection during coitus.
Sildenafil citrate (Viagra®) ,   Vardenafil (Levitra®) ,   Tadalafil (Cialis®)


preface | about the author | order the book | knowledge center | search

Contact Us


        Copyright © 2001 by Technomic Publishing Company, Inc. All Rights Reserved