RT Journal Article SR Electronic T1 Letter to the Editor: Hierarchy of Evidence JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP 8677 DO 10.14444/8677 A1 Pereira, Mauricio G. YR 2024 UL https://www.ijssurgery.com/content/early/2024/10/28/8677.abstract AB