@article{ref1,
title="Sexual Attitude and Perception on Sexual Relationship Among Long‐Term Users of Sildenafil",
journal="Journal of sexual medicine",
year="2008",
author="Kim, Sae‐Chul",
volume="5",
number="11",
pages="2681-2687",
abstract="Introduction.  High discontinuation rates of sildenafil were reported in its respdonders.<p />",
language="",
issn="1743-6095",
doi="10.1111/j.1743-6109.2008.00816.x",
url="http://dx.doi.org/10.1111/j.1743-6109.2008.00816.x"
}