RT Journal Article SR Electronic T1 Same, same or different? Commonalities and differences between spondyloarthritis and its subsets of axial and peripheral spondyloarthritis with psoriatic arthritis and its diverse phenotypes JF RMD Open JO RMD Open FD EULAR SP e002872 DO 10.1136/rmdopen-2022-002872 VO 9 IS 2 A1 Proft, Fabian A1 Käding, Henriette YR 2023 UL http://rmdopen.bmj.com/content/9/2/e002872.abstract AB