Comparison of Efficacy and Safety between Anterior Cisterna and High Cervical Intrathecal Drug Delivery for Craniofacial Cancer Pain: A Multicenter Retrospective Cohort Study. - Li, Qin; Li, Deshan; Li, Qiju; Zou, Zheng; Wang, Huaiming; Min, Xin; Wang, Yu; Zou, Jiang; Feng, Pengjiu; Zhang, Aimin (Pain & Therapy, 2026)