Clinical Outcomes of Dual-Beam Particle Therapy in Head and Neck Adenoid Cystic Carcinoma. - Schmich, Gertrud; Keil, Alwina; Sheikhzadeh, Fatima Frosan; Eberle, Fabian; Habermehl, Daniel; Held, Thomas; Lishewski, Philipp; Stuck, Boris A.; Vorwerk, Hilke; Zink, Klemens; Adeberg, Sebastian; Gawish, Ahmed (Cancers, 2026)