Additional file 3: of Prevalence and pattern of co-occurring musculoskeletal pain and its association with back-related disability among people with persistent low back pain: protocol for a systematic review and meta-analysis Cecilie Overaas Melker Johansson Tarcisio de Campos Manuela Ferreira Bard Natvig Paul Mork Jan Hartvigsen 10.6084/m9.figshare.5709205.v1 https://springernature.figshare.com/articles/journal_contribution/Additional_file_3_of_Prevalence_and_pattern_of_co-occurring_musculoskeletal_pain_and_its_association_with_back-related_disability_among_people_with_persistent_low_back_pain_protocol_for_a_systematic_review_and_meta-analysis/5709205 Risk of bias tool. (DOCX 125 kb) 2017-12-16 05:00:00 Persistent low back pain Co-occurring musculoskeletal pain Prevalence Patterns Systematic review protocol