Can some cases of 'possible' spondyloarthropathy be classified as 'definite' or 'undifferentiated' spondyloarthropathy? Value of criteria for spondyloarthropathies. Spanish Spondyloarthropathy Study Group.
Joint Bone Spine. 2000;67(6):516-20. doi: 10.1016/s1297-319x(00)00201-3.
Joint Bone Spine. 2000.
PMID: 11195314