To determine the clinical and immunological characteristics of primary Sjögren's syndrome (SS) in men from a large series of unselected patients with this condition.
Systemic Autoimmune Diseases Unit, Department of Medicine, IDIBAPS (Institut d'Investigacions Biomèdiques 'August Pi i Sunyer'), Hospital Clínic, University of Barcelona, Barcelona, Catalonia, Spain. cervera@medicina.ub.es