Letter to the Editor in response to: "A critical appraisal of the North American Spine Society guidelines with the Appraisal of Guidelines for Research and Evaluation II instrument".
Cho CH, Ghogawala Z, Matz P, Kreiner DS, Reitman C. Letter to the Editor in response to: "A critical appraisal of the North American Spine Society guidelines with the Appraisal of Guidelines for Research and Evaluation II instrument". Spine J. 2015 Oct 01; 15(10):2300-1.