Ramos-Casals Manuel, Brito-Zerón Pilar, Sisó-Almirall Antoni, Bosch Xavier
Sjögren Syndrome Research Group, Department of Systemic Autoimmune Diseases, Institut d'Investigacions Biomèdiques August Pi i Sunyer, ICMiD, Hospital Clinic, Barcelona, Spain.
BMJ. 2012 Jun 14;344:e3821. doi: 10.1136/bmj.e3821.