[1] Nuffield Orthopaed Ctr, Oxford OX3 7LD, England
[2] Wirral Hosp NHS Trust, Wirral, Merseyside, England
[3] Aintree Univ Hosp, Liverpool, Merseyside, England
[4] Wansbeck Gen Hosp, Newcastle Upon Tyne, Tyne & Wear, England
[5] Freeman Rd Hosp, Newcastle Upon Tyne NE7 7DN, Tyne & Wear, England
[6] Univ Newcastle Upon Tyne, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[7] Primary Care Theumatol Soc, Bath, Avon, England
[8] Royal Natl Hosp Rheumat Dis, Bath BA1 1RL, Avon, England
[9] Robert Jones & Agnes Hunt Orthopaed Hosp, NHS Trust, Oswestry SY10 7AG, Shrops, England
[10] Lewes Hlth Ctr, Lewes, England
[11] Arthritis Care, Barnstaple, England
[12] Royal Coll Nursing Theumatol Forum, Barnstaple, England
[13] Litchdon Hlth Ctr, Barnstaple, England
[14] Hope Hosp, Dept Podiatry & Food Hlth, Salford M6 8HD, Lancs, England
[15] Hope Hosp, Dept Orthopaed & Trauma, Salford M6 8HD, Lancs, England
[16] City Hosp, Nottingham NG5 1PB, England