TY - JOUR T1 - Response Letter JF - International Journal of Spine Surgery JO - Int J Spine Surg SP - 164 LP - 165 DO - 10.14444/8361 VL - 17 IS - 1 AU - Andrew L. Freeman AU - Joan E. Bechtold AU - David W. Polly Y1 - 2023/02/01 UR - http://ijssurgery.com//content/17/1/164.abstract N2 - ER -