Psoriatic arthritis: it's as easy as "PSA"

Affiliations

• ¹ Harvard Medical School, Boston, Massachusetts.
• ² Department of Rheumatologic and Immunologic Disease, Cleveland Clinic and Cleveland Clinic Learner College of Medicine of Case Western Reserve University, Cleveland, Ohio.
• ³ Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, Rhode Island.
• ⁴ Department of Dermatology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Department of Medicine, Division of Rheumatology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address: [email protected].