P8 Novel endothelial progenitor cells populations as biomarkers of damage and remission in systemic lupus erythematosus by Samuel Garcia, Pablo Pazos-López, Jose Maria Pego Reigosa, Irene Altabás-González, Carlos Rafael-Vidal, Sara Martínez-Ramos, Beatriz Malvar-Fernández, Coral Mouriño, Arturo Fraga-Bau