esophageal dysmotility treatmentscleroderma esophageal dysmotilityesophageal dysmotility disordermoderate esophageal dysmotilitysevere esophageal dysmotilitydistal esophageal dysmotilitymild esophageal dysmotilitydysmotility oesophagusesophagus dysmotilityesophageal dysphagiaesophagus esophagitisesophageal inflammation treatment