Proposal of Hard Palate-C2-Hyoid Bone Angle as a New Parameter Possibly Related to Dysphagia as a Postoperative Complication of Upper Cervical Fixation: A Case Series and Pilot Study. - Maki Y; Kawasaki T; Kobayashi T; Ioroi Y; Goda A; Takayama M (Cureus, 2025)