title: Musculoskeletal features in systemic lupus erythematosus and their relationship with disability.
authors.affiliation: Division of Rheumatology, Department of Medicine, University of Pennsylvania, School of Medicine, Philadelphia, Pennsylvania 19104.
authors.forename: N G
authors.initials: NG
authors.lastname: Murphy
authors.forename: A
authors.initials: A
authors.lastname: Koolvisoot
authors.forename: R
authors.initials: R
authors.lastname: Schumacher
authors.forename: J M
authors.initials: JM
authors.lastname: Von Feldt
authors.forename: P E
authors.initials: PE
authors.lastname: Callegari