Authors: Piet van Riel; Rieke Alten; Bernard Combe; Diana Abdulganieva; Paola Bousquet; Molly Courtenay; Cinzia Curiale; Antonio Gómez-Centeno; Glenn Haugeberg; Burkhard Leeb; Kari Puolakka; Angelo Ravelli; Bernhard Rintelen; Piercarlo Sarzi-Puttini Journal: RMD Open Date: 2016-11-24