Effect of Botulinum Toxin Injection Guided by Ultrasound Combined With Balloon Localization on Cricopharyngeal Achalasia

Conditions: Cricopharyngeal Achalasia; Dysphagia Interventions: Drug: Botulinum toxin type A for injection Sponsors: The First Affiliated Hospital of Zhengzhou University Recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials