Echocardiography as an Initial Diagnostic Tool for Rare Extra Cardiac Diagnosis- Idiopathic Achalasia. Emerging Medical Science, [S. l.], v. 3, n. 06, p. 68–76, 2024. Disponível em: http://emspub.com/index.php/ems/article/view/62. Acesso em: 3 apr. 2025.