Barriers and facilitators for physical activity in rheumatic and musculoskeletal disease: a European-based survey

George S. Metsios, Sally A. M. Fenton, Katerina Tzika, Rikke Helene Moe, G. Fragoulis, T. P. M. Vliet Vlieland, Elena Nikiphorou, C.H.M. van den Ende, Ioannis G. Fatouros, M. van der Esch, Karin Niedermann, Antonios Stavropoulos‐Kalinoglou, Jet Veldhuijzen Zanten, Nina Brodin, Cameron O’Brien, Yiannis Koutedakis, Norelee Kennedy, Thijs Willem Swinnen, Carina Boström, George D. Kitas