Link to manometry/impedance resources
YouTube GI 101: What is esophageal manometry?
YouTube GI 101: Swallowing Disorders and Achalasia
YouTube GI 101: Esophageal Motility Disorders Part 1
YouTube GI 101: Esophageal Motility Disorders Part 2
YouTube GI 101: Treatment of Achalasia
Medtronic. US Chicago Classification of Esophageal Dysmotility Disorders. 2020
Esophageal Motility Disorders: Chicago Classification 4.0. November 2020