RT Journal Article SR Electronic T1 A Critical Examination of the Polysymptomatic Distress Scale Construct as a Symptom Severity Questionnaire JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1364 OP 1367 DO 10.3899/jrheum.150611 VO 42 IS 8 A1 RONALD FRIEND A1 ROBERT M. BENNETT YR 2015 UL http://www.jrheum.org/content/42/8/1364.abstract AB