RT Journal Article SR Electronic T1 Minimal Important Difference and Responsiveness to Change of the SF-36 in Patients with Psoriatic Arthritis Receiving Tumor Necrosis Factor-α Blockers JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2077 OP 2079 DO 10.3899/jrheum.101256 VO 38 IS 9 A1 YING-YING LEUNG A1 TRACY YANER ZHU A1 LAI SHAN TAM A1 EMILY WAI-LIN KUN A1 EDMUND KWOK-MING LI YR 2011 UL http://www.jrheum.org/content/38/9/2077.2.abstract AB