1. Matsunaga S, Sakou T. OPLL: disease entity, incidence, literature search and prognosis. In: Yoneobu K, Nakamura K, Toyama Y editors. OPLL: ossification of the posterior longitudinal ligament. 2nd ed. Tokyo (Japan): Springer; 2006. p.11-7.
2. Ohtsuka K, Terayama K, Yanagihara M, et al. An epidemiological survey on ossification of ligaments in the cervical and thoracic spine in individuals over 50 years of age. Nippon Seikeigeka Gakkai Zasshi 1986 60:1087-98.
3. Iwasaki M, Okuda S, Miyauchi A, et al. Surgical strategy for cervical myelopathy due to ossification of the posterior longitudinal ligament: Part 1: clinical results and limitations of laminoplasty. Spine (Phila Pa 1976) 2007 32:647-53.
4. Shin JH, Steinmetz MP, Benzel EC, et al. Dorsal versus ventral surgery for cervical ossification of the posterior longitudinal ligament: considerations for approach selection and review of surgical outcomes. Neurosurg Focus 2011 30:E8.
5. Hiramatsu M, Sugiu K, Hishikawa T, et al. Epidemiology of dural arteriovenous fistula in Japan: Analysis of Japanese Registry of Neuroendovascular Therapy (JR-NET2). Neurol Med Chir (Tokyo) 2014 54:63-71.
6. Kuwayama N, Endo S, Kubo M, et al. Present status in the treatment of dural arteriovenous fistulas in Japan. Jpn J Neurosurg (Tokyo) 2011 20:12-9.
8. Hiramatsu M, Sugiu K, Ishiguro T, et al. Angioarchitecture of arteriovenous fistulas at the craniocervical junction: a multicenter cohort study of 54 patients. J Neurosurg 2018 128:1839-49.
9. Wang JY, Molenda J, Bydon A, et al. Natural history and treatment of craniocervical junction dural arteriovenous fistula. J Clin Neurosci 2015 22:1701-7.
10. Zhao J, Xu F, Ren J, et al. Dural arteriovenous fistulas at the craniocervical junction: a systematic review. J Neurointerv Surg 2016 8:684-53.
11. Izawa K. Comparative roentgenographical study on the incidence of ossification of the posterior longitudinal ligament and other degenerative changes of the cervical spine among Japanese, Koreans, Americans and Germans. Nippon Seikeigeka Gakkai Zasshi 1980 54:461-74.
12. Pham MH, Attenello FJ, Lucas J, et al. Conservative management of ossification of the posterior longitudinal ligament. A review. Neurosurg Focus 2011 30:E2.
13. Matsunaga S, Sakou T, Taketomi E, et al. Clinical course of patients with ossification of the posterior longitudinal ligament: a minimum 10-year cohort study. J Neurosurg 2004 100(3 Suppl Spine):245-8.
14. Kai Y, Hamada J, Morioka M, et al. Arteriovenous fistulas at the cervicomedullary junction presenting with subarachnoid hemorrhage: six case reports with special reference to the angiographic pattern of venous drainage. AJNR Am J Neuroradiol 2005 26:1949-54.
15. Kinouchi H, Mizoi K, Takahashi A, et al. Dural arteriovenous shunts at the craniocervical junction. J Neurosurg 1998 89:755-61.
16. Nakamura M, Miyazaki T, Shinozaki N, et al. Clinical characteristics of craniocervical junction arteriovenous fistulas. No Shinkei Geka 2017 45:879-88.
18. Sato K, Terbrugge KG, Krings T. Asymptomatic spinal dural arteriovenous fistulas: pathomechanical considerations. J Neurosurg Spine 2012 16:441-6.