Dysphagia
DDX for dysphagia: http://lifeinthefastlane.com/resources/dysphagia-ddx/
Determining the cause of dysphagia: https://www.aliem.com/2010/paucis-verbis-card-dysphagia/
ICU focused review of dysphagia: http://pulmccm.org/2013/review-articles/dysphagia-swallowing-disorders-icu-review/