@incollection{Niaz11,
author = {Iftikhar Ahmed and Zafar Niaz},
title = {Ulcerative Colitis},
booktitle = {Ulcerative Colitis},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Mortimer B. O'Connor},
chapter = {1},
doi = {10.5772/25591},
url = {https://doi.org/10.5772/25591}
}