Multicenter Study
The prognostic value of catastrophizing for predicting the clinical evolution of low back pain patients: a study in routine clinical practice within the Spanish National Health Service.
Spine J. 2012 Jul 1;12(7):545-55.
Randomized Controlled Trial
Positive predictive factors and subgroup analysis of clinically relevant improvement after anterior cervical decompression and fusion for cervical disc disease: a 10- to 13-year follow-up of a prospective randomized study:...
J Neurosurg Spine. 2013 Oct 1;19(4):403-11.
Multicenter Study
Effectiveness of a low back pain classification system.
Spine J. 2009 Aug 1;9(8):648-57.