Wong, Pearl, Doruk Seyfi, Karl Herba, and Gregory Falk. “Dysphagia and Oesophageal Dilation in Giant Hiatus Hernia: Angulation of the Gastro-Oesophageal Junction or Achalasia?”. International Surgery Journal 10, no. 10 (September 28, 2023): 1684–1686. Accessed June 17, 2025. https://www.ijsurgery.com/index.php/isj/article/view/9911.