Letter to the Editor Concerning "Does the Level of Pedicle Subtraction Osteotomy Affect the Surgical Outcomes in Ankylosing Spondylitis-Related Thoracolumbar Kyphosis With the Same Curve Pattern?" by Tang ZL et al (Global Spine Journal. 2021 Mar 2:2192568220980716). Issue 6 (July 2022) - Mittal, Samarth; Kandwal, Pankaj; Sarkar, Bhaskar