@inbook{1186900171,
author={John Murtagh and Jill Rosenblatt and Justin Coleman and Clare Murtagh},
title={Haematemesis and melaena},
booktitle={John Murtagh’s General Practice, 8th Edition},
publisher={McGraw-Hill Education},
address={Sydney, Australia},
year={2022},
url={murtagh.mhmedical.com/content.aspx?aid=1186900171}
}