Authors' Reply Re: "CT evaluation of occipitocervical joint violation by C1 lateral mass screw" by Jun-Song Yang, M.D; Hao Chen; Liang Yan, M.D; Peng Liu, M.D; Tuan-Jiang Liu, M.D; Da-Geng Huang, M.D; Ding-Jun Hao, M.D. - Yeom JS; Buchowski JM (The spine journal : official journal of the North American Spine Society, 2019)