Correspondence to Professor Hendrika Bootsma, Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, Groningen 9713 GZ, The Netherlands; h.bootsma{at}umcg.nl ...
Objective Epidemiological studies of primary Sjögren's syndrome (pSS) are crucial for describing the burden to society and the public medical system and for shedding light on aetiology. Previous ...
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