Niebisch, S Achalasia-an unnecessary long way to diagnosis. [electronic resource] - Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus May 2017 - 1-6 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1442-2050 Standard No.: 10.1093/dote/dow004 doi Subjects--Topical Terms: AdultAgedDelayed Diagnosis--statistics & numerical dataEsophageal Achalasia--diagnosisEsophagoscopyFemaleGermanyHumansMaleManometryMiddle AgedReferral and Consultation--statistics & numerical dataSymptom Assessment--economicsTime Factors