RT Journal Article SR Electronic T1 Spine Surgery in the Chilean Public Health System JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP 156 OP 159 DO 10.14444/8391 VO 17 IS 1 A1 Álvaro Dowling A1 Kai-Uwe Lewandrowski YR 2023 UL http://ijssurgery.com//content/17/1/156.abstract AB