[1] Newcastle Univ, Populat Hlth Sci Inst, Newcastle Upon Tyne, Tyne & Wear, England
[2] South Tyneside & Sunderland NHS Fdn Trust, Physiotherapy, South Shields, England
[3] Pennine MSK Partnership, Oldham, England
[4] Great North Childrens Hosp, Paediat Rheumatol, Newcastle Upon Tyne, Tyne & Wear, England
[5] Northumbria Univ, Dept Social Work Educ & Community Wellbeing, Newcastle Upon Tyne, Tyne & Wear, England