BL has received research funding or awards from the German Research Foundation, the medical faculty of the University of Münster, the German Society for Geriatrics, and the Rolf und Hubertine Schiffbauer Foundation; has received travel support or conference reimbursement for presentations from the German Society for Clinical Neurophysiology and Functional Imaging, the European Stroke Organisation, the German Society for Neurology, the European Society for Swallowing Disorders, the United European Gastroenterology, the German Society for Nutritional Medicine, the German Society for Internal Medicine, the University of Zurich, and the Sorbonne Université; and has received honoraria for lectures from the German Society for Muscular Diseases and Phagenesis. MT-G received payment for expert testimony from Phagenesis for involvement in a study as a reviewer of flexible endoscopic evaluation of swallowing videos. SS-K was supported by an endowed professorship from the Else Kröner Fresenius Stiftung. PMB received support from Phagenesis (provision of devices for National Institute for Health & Care Research Health Technology Assessment-funded PhEAST trial) and received consulting fees from Phagenesis as a member of the advisory board. RD received consulting fees from Daiichi Sankyo and Pfizer; received honoraria for lectures from Daiichi Sankyo, Pfizer, and Alexion; received honoraria from Phagenesis paid to the University Hospital Münster for participating in the steering committees of different trials; and received reimbursement of travel expenses as a board member of the European Society for Swallowing Disorders and a board member of the German Dysphagia Society. All other authors declare no competing interests.