Authors: Alessandro Chiarotto; Richard A Deyo; Caroline B Terwee; Maarten Boers; Rachelle Buchbinder; Terry P Corbin; Leonardo O P Costa; Nadine E Foster; Margreth Grotle; Bart W Koes; Francisco M Kovacs; Chung-Wei Christine Lin; Chris G Maher; Adam M Pearson; Wilco C Peul; Mark L Schoene; Dennis C Turk; Maurits W van Tulder; Raymond W Ostelo Journal: Eur Spine J Date: 2015-04-05 Impact factor: 3.134