@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} }