@inbook{1169079267,
author={Christopher Michael Welch and Kevin D. Brown},
editor={Lalwani, Anil K.},
title={Diseases of the External Ear},
booktitle={Current Diagnosis & Treatment Otolaryngology—Head and Neck Surgery, 4e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2020},
url={accessmedicine.mhmedical.com/content.aspx?aid=1169079267}
}