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The Prevalence and Patterns of Pharyngoesophageal Dysmotility in Patients with Early Stage Parkinson's DiseaseHYE YOUNG SUNG; KIM, Joong-Seok; SANG WOO KIM et al.Movement disorders. 2010, Vol 25, Num 14, pp 2361-2368, issn 0885-3185, 8 p.Article