Leite, Ana Bento, Mariana Maia, and Filipa Novo. “Per-Oral Endoscopic Myotomy in Achalasia and Lung Abscess: A Case Report”. Brazilian Journal of Case Reports 5, no. 1 (July 9, 2025): bjcr98. Accessed August 8, 2025. https://www.bjcasereports.com.br/index.php/bjcr/article/view/bjcr98.