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Cella, David, Hilary Wilson, Huda Shalhoub, Dennis A. Revicki, Joseph C. Cappelleri, Andrew G. Bushmakin, Elizabeth Kudlacz, a Ming-Ann Hsu. "Content Validity and Psychometric Evaluation of Functional Assessment of Chronic Illness Therapy-Fatigue in Patients With Psoriatic Arthritis." J Patient Rep Outcomes 2019.

Cella, David, et al. "Content Validity and Psychometric Evaluation of Functional Assessment of Chronic Illness Therapy-Fatigue in Patients With Psoriatic Arthritis." J Patient Rep Outcomes 2019.