1. Department of Neurology; Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience; Amsterdam Netherlands
2. Department of Rheumatology; University Hospitals Coventry and Warwickshire NHS Trust; Coventry UK
3. Warwick Medical School; University of Warwick; Coventry UK
4. Rheumatology Unit, Department of Internal Medicine; Azienda USL-IRCCS di Reggio Emilia; Reggio Emilia Italy
5. Cochrane Neuromuscular Group; University College London Hospitals Trust; London UK
6. Queen Square Centre for Neuromuscular Diseases; National Hospital for Neurology and Neurosurgery; London UK
7. Department of Rheumatology; Kings College Hospital; London UK