@incollection{Sousa11,
author = {Maria Izabel Gomes Silva and Francisca Cléa Florenço de Sousa},
title = {Gastric Ulcer Etiology},
booktitle = {Peptic Ulcer Disease},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Jianyuan Chai},
chapter = {1},
doi = {10.5772/20796},
url = {https://doi.org/10.5772/20796}
}