title: Dr. Erdozain, et al reply.
authors.affiliation: Autoimmune Diseases Research Unit, Department of Internal Medicine, Biocruces Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, Spain.
authors.forename: Jose Gabriel
authors.initials: JG
authors.lastname: Erdozain
authors.affiliation: Autoimmune Diseases Research Unit, Department of Internal Medicine, Biocruces Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, Spain.
authors.forename: Irama
authors.initials: I
authors.lastname: Villar
authors.affiliation: Autoimmune Diseases Research Unit, Department of Internal Medicine, Biocruces Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Nieto
authors.affiliation: Autoimmune Diseases Research Unit, Department of Internal Medicine, Biocruces Health Research Institute, Hospital Universitario Cruces, University of the Basque Country, Spain. r.irastorza@euskaltel.net.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Ruiz-Irastorza
mesh_terms: D005260:Female; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000453:epidemiology*; D008297:Male; D058729:Peripheral Arterial Disease / Q000453:epidemiology*