Persistent central neuropathic pain caused by intramedullary hemorrhage from spinal dural arteriovenous fistula: a case report and literature review - Iampreechakul, P; Lertbutsayanukul, P; Siriwimonmas, S; Jittapiromsak, P; Tantivatana, J; Niruthisard, S (Austin J Anesthesia Analgesia, 2019)