PT - JOURNAL ARTICLE AU - WILLIAM TILLETT AU - PHILIP HELLIWELL TI - To Lump or Split When Assessing Psoriatic Arthritis — Not Mutually Exclusive? AID - 10.3899/jrheum.190867 DP - 2020 Mar 01 TA - The Journal of Rheumatology PG - 307--309 VI - 47 IP - 3 4099 - http://www.jrheum.org/content/47/3/307.short 4100 - http://www.jrheum.org/content/47/3/307.full SO - J Rheumatol2020 Mar 01; 47