?:authorAffiliation
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[\'VA Nebraska-Western Iowa Health Care System and University of Nebraska Medical Center, Omaha.\', \'University of Nebraska Medical Center, Omaha.\', \'University of Nebraska Medical Center, Omaha, and FORWARD-The National Databank for Rheumatic Diseases, Wichita, Kansas.\', \'VA Salt Lake City Health Care System and University of Utah.\', \'Corporal Michael J. Crescenz VAMC and University of Pennsylvania, Philadelphia.\']
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