@inbook{1118594434,
author={Roberto Arenas Guzmán},
title={Úlcera venosa de la pierna},
booktitle={Dermatología. Atlas, diagnóstico y tratamiento, 6e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2015},
url={accessmedicina.mhmedical.com/content.aspx?aid=1118594434}
}