[BMJ]
Can rheumatologists unequivocally diagnose axial spondyloarthritis in patients with chronic back pain of less than 2 years duration? Primary outcome of the 2-year SPondyloArthritis Caught Early (SPACE) cohort
Authors£ºMary Lucy Marques; Sofia Ramiro; Miranda van Lunteren; Rosalinde Anne Stal; Robert BM Landew¨¦; Marleen van de Sande; Karen Minde Fagerli; Inger Jorid Berg; Maikel van Oosterhout; Sofia Exarchou; Roberta Ramonda; D¨¦sir¨¦e van der Heijde; Floris A van Gaalen