We wish to thank the Arthritis Research Campaign for providing the infrastructure that made this collection of myositis patients' DNA samples possible, and the Myositis Support Group (UK), which provided the funds necessary to undertake the genetic analysis presented. We also wish to thank the UK physicians who contributed to AOMIC. Their names and affiliations are as follows, in alphabetical order, with affiliation: Robert M Bernstein, MD (Manchester Royal Infirmary, Manchester), Huw LC Beynon, FRCP (Royal Free Hospital, London), Carol M Black, MD (Royal Free Hospital, London), Andrew Borg, MD (Nevill Hall Hospital, Abergavenny), Ian N Bruce, MD (Manchester Royal Infirmary, Manchester), Felix E Bruckner, FRCP (St Georges Hospital, London), Robin C Butler, MD (Oswestry Orthopaedic Hospital, Oswestry), John E Carty, FRCP (Lincoln County Hospital, Lincoln), Fiona Clarke, MRCP (South Cleveland Hospital, Middlesborough), Robert G Cooper, MD (Hope Hospital, Salford), Peter T Dawes, FRCP (Haywood Hospital, Stoke on Trent), James AJ Devlin, MD (Pindersfields General Hospital, Wakefield), Paul Emery, MD (Leeds General Hospital, Leeds), John N Fordham, MD (South Cleveland Hospital, Middlesborough), Alexander D Fraser, MD (Leeds General Hospital, Leeds), John SH Gaston, PhD (Addenbrookes Hospital, Cambridge), Emmanuel George, PhD (Arrowe Park Hospital, Wirral), Bridget Griffiths, MD (Freeman Hospital, Newcastle), Ian D Griffiths, FRCP (Freeman Hospital, Newcastle), Beverley J Harrison, MD (Crumpsall Hospital, Manchester), Elaine M Hay, MD (Haywood Hospital, Stoke-On-Trent), Ariane L Herrick, MD (Hope Hospital, Salford), Roy C Hilton, MD (Hope Hospital, Salford), David Hilton-Jones, MD (Radcliffe Infirmary, Oxford), Nigel P Hurst, PhD (Roodlands Hospital, Haddington), John D Isaacs, PhD (St James Hospital, Leeds), David A Isenberg, MD (Middlesex Hospital, London), Adrian C Jones, FRCP (City Hospital, Nottingham), Anthony KP Jones, MD (Hope Hospital, Salford), Thomas D Kennedy, FRCP (Arrowe Park Hospital, Wirral), George D Kitas, PhD (Dudley Group Hospitals Trust, Birmingham), Peter S Klimiuk, FRCP (Royal Oldham Hospital, Oldham), Peter C Lanyon, MRCP (Queens Medical Centre, Nottingham), Brian RF Lecky, MD (Walton Centre for Neurology, Liverpool), Stuart Linton, MRCP (Nevill Hall Hospital, Abergavenny), Raashid A Luqmani, FRCP (Western General Hospital, Edinburgh), Jeffrey S Marks, FRCP (Stepping Hill Hospital, Stockport), Michael FR Martin, FRCP (St James Hospital, Leeds), Frank McKenna, MD (Trafford General Hospital, Manchester), John McLaren (Crumpsall Hospital, Manchester), Mike J McMahon, FRCP (Dumfries & Galloway Royal Infirmary, Dumfries), Euan R McRorie, FRCP (Western General Hospital, Edinburgh), Peter H Merry, MD (Norfolk & Norwich Hospital, Norwich), Anne Nicholls, FRCP (West Suffolk Hospital, Bury St Edmunds), Katy E Over, FRCP (Countess of Chester Hospital, Chester), Jonathan C Packham, MD (Haywood Hospital, Stoke on Trent), Nicolo Pipitone, MD (Kings College, London), Michael J Plant, MD (South Cleveland Hospital, Middlesborough), Thomas Pullar, MD (Ninewells Hospital, Dundee), Mark E Roberts, FRCP (Neurosciences Centre for the North West, Manchester), Paul Sanders, MD (Withington Hospital, Manchester), David GI Scott, MD (Norfolk & Norwich Hospital, Norwich), David L Scott, MD (Kings College Hospital, London), Thomas PG Sheeran, MD (Cannock Chase Hospital, Cannock), Alan J Silman, MD (Manchester Royal Infirmary, Manchester), Usha Srinivasan, MRCP (St Woolos' Hospital, Newport), David R Swinson, FRCP (Wrightington Hospital, Nr Wigan), Lee-Suan Teh, MD (Blackburn Royal Infirmary, Blackburn), Bryan D Williams, FRCP (University Hospital of Wales, Cardiff), John B Winer, MD (Queen Elizabeth Hospital, Birmingham).