1 Department of Oral Biology, University of Florida, 1600 SW Archer Rd, Gainesville, FL 32610-0424; Autoantibody Standardization Committee, International Union of Immunological Societies. Electronic address: [email protected].
2 Rheumatology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil; Quality Assessment and Standardization Committee, International Union of Immunological Societies.