nosed. In southern Spain, the incidence and prevalence of PSV are lower than in northern Spain and in countries in the Northern Hemisphere

1Department of Internal Medicine, Hospital Costa del Sol, Marbella, Spain; 2Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clínic, University of Barcelona, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain. Carlos Romero-Gómez, MD Josefa A. Aguilar-García, MD M. Dolores García-de-Lucas, MD Rafael Cotos-Canca, MD Julián Olalla-Sierra, MD J. Javier García-Alegría, MD José Hernández-Rodríguez, MD The results of this study were partially presented at the 16th International Vasculitis and ANCA Workshop, Paris (France), April 2013. Please address correspondence to: José Hernández-Rodríguez, MD, Department of Autoimmune Diseases, Hospital Clínic, Villarroel 170, 08036 Barcelona, Spain. E-mail: jhernan@clinic.ub.es Received on April 26, 2014; accepted in revised form on July 14, 2014. Clin Exp Rheumatol 2015; 33 (Suppl. 89): S11-S18. © Copyright CliniCal and ExpErimEntal rhEumatology 2015.