PT - JOURNAL ARTICLE AU - WILLIAM TILLETT TI - Composite Measures of Impact and Activity in Psoriatic Arthritis: A Conceptual Framework AID - 10.3899/jrheum.161544 DP - 2017 Mar 01 TA - The Journal of Rheumatology PG - 268--270 VI - 44 IP - 3 4099 - http://www.jrheum.org/content/44/3/268.short 4100 - http://www.jrheum.org/content/44/3/268.full SO - J Rheumatol2017 Mar 01; 44