No abstract available
MeSH terms
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Aged, 80 and over
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Endoscopes
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Esophageal Achalasia / diagnosis*
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Esophageal Achalasia / surgery*
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Esophagoscopy / methods*
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Female
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Follow-Up Studies
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Humans
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Mouth
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Myotomy / instrumentation
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Myotomy / methods*
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Natural Orifice Endoscopic Surgery / methods*
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Risk Assessment
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Severity of Illness Index
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Treatment Outcome