@incollection{Ahmed21,
author = {Vincenzo Neri and Monjur Ahmed},
title = {Introductory Chapter: Complications of Gastroduodenal Ulcers},
booktitle = {Esophagitis and Gastritis},
publisher = {IntechOpen},
address = {Rijeka},
year = {2021},
editor = {Vincenzo Neri and Monjur Ahmed},
chapter = {1},
doi = {10.5772/intechopen.101478},
url = {https://doi.org/10.5772/intechopen.101478}
}