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OBJECTIVESTo characterize the phenotypic presentation at diagnosis of childhood-onset primary Sjögren syndrome (SjS).METHODSThe Big Data Sjögren Project Consortium is an international, multicentre registry using worldwide data-sharing cooperative merging of pre-existing clinical SjS databases from the five continents. For this study, we selected those patients in whom the disease was diagnosed bel
