AHMAD, M.; REYNOLDS, E.; CHOWDHURY, M.; ABDALLA, M.; GALLOWAY, S. COVID-19 as a possible cause for achalasia: a case report. Journal of Gastrointestinal and Liver Diseases, [S. l.], v. 32, n. 4, p. 565–566, 2023. DOI: 10.15403/jgld-5062. Disponível em: https://jgld.ro/jgld/index.php/jgld/article/view/5062. Acesso em: 21 apr. 2026.