Recurrent Cervical Esophageal Fistula and Retroesophageal Abscess Following Surgical Management of Zenker's Diverticulum. - Ciuntu, Bogdan Mihnea; Ludusanu, Andreea; Zara, Mara Teodora; Corlade-Andrei, Mihaela; Tanevski, Adelina; Stan, Cristinel Ionel; Chiran, Dragos Andrei; Vintila, Dan; Andronic, Dan; Balan, Gheorghe (Journal of Clinical Medicine, 2026)