RT Journal Article SR Electronic T1 To Lump or Split When Assessing Psoriatic Arthritis — Not Mutually Exclusive? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 307 OP 309 DO 10.3899/jrheum.190867 VO 47 IS 3 A1 TILLETT, WILLIAM A1 HELLIWELL, PHILIP YR 2020 UL http://www.jrheum.org/content/47/3/307.abstract AB