title: Defining unclassifiable connective tissue diseases: incomplete, undifferentiated, or both?
authors.forename: Andrea
authors.initials: A
authors.lastname: Doria
authors.forename: Marta
authors.initials: M
authors.lastname: Mosca
authors.forename: Pier Franca
authors.initials: PF
authors.lastname: Gambari
authors.forename: Stefano
authors.initials: S
authors.lastname: Bombardieri
mesh_terms: D003240:Connective Tissue Diseases / Q000145:classification* / Q000175:diagnosis*; D018450:Disease Progression; D006801:Humans