415 UPPER ESOPHAGEAL SPHINCTER DYSFUNCTION IS AN IMPORTANT CAUSE OF ORO-PHARYNGEAL DYSPHAGIA IN PARKINSON'S DISEASE.
| Autor: | Wu, Peter I., Wong, Marc, Szczesniak, Michal, Lam, Thomas Y., Wu, Justin C., Mok, Vincent, Cock, Charles, Chan, Anne, Ma, Karen, Chiu, Philip Wai Yan W., Cook, Ian J., Omari, Taher |
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| Zdroj: | In Gastroenterology May 2020 158(6) Supplement 1:S |
| Databáze: | ScienceDirect |
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