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Robert W. Bastian, Melissa L. Smithson: Inability to Belch and Associated Symptoms Due to Retrograde Cricopharyngeus Dysfunction: Diagnosis and Treatment. In: OTO open. Band3, Nr.1, Januar 2019, ISSN2473-974X, S.2473974X19834553, doi:10.1177/2473974X19834553, PMID 31236539, PMC 6572913 (freier Volltext).
Robert W. Bastian, Melissa L. Smithson: Inability to Belch and Associated Symptoms Due to Retrograde Cricopharyngeus Dysfunction: Diagnosis and Treatment. In: OTO open. Band3, Nr.1, Januar 2019, ISSN2473-974X, S.2473974X19834553, doi:10.1177/2473974X19834553, PMID 31236539, PMC 6572913 (freier Volltext).
Robert W. Bastian, Melissa L. Smithson: Inability to Belch and Associated Symptoms Due to Retrograde Cricopharyngeus Dysfunction: Diagnosis and Treatment. In: OTO open. Band3, Nr.1, Januar 2019, ISSN2473-974X, S.2473974X19834553, doi:10.1177/2473974X19834553, PMID 31236539, PMC 6572913 (freier Volltext).