Letter to editor：“Prognosis and conditional nomogram of cervical spine fracture in patients with severe spinal cord injury: a multicenter retrospective study”

aDepartment of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China bDepartment of Spinal Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China Yanfei Yang, Yu Zhang, ShuXin Zhao These authors have contributed equally to this work. Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article. Published online ■ ■ *Corresponding author. Address: Rui Zhang. E-mail address: [email protected] (R. Zhang). This is an open access article distributed under the Creative Commons Attribution-NoDerivatives License 4.0, which allows for redistribution, commercial and non-commercial, as long as it is passed along unchanged and in whole, with credit to the author. http://creativecommons.org/licenses/by-nd/4.0/