1 Internal Medicine Unit, Fundación Alcorcon University Hospital, Rey Juan Carlos University, Madrid, Spain.
2 Head Lipid Clinic and Lipid Research Group, Miguel Servet University Hospital, Instituto de Investigación Sanitaria Aragon, Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Zaragoza, Spain.
3 Lipids and Arteriosclerosis Research Unit, Sant Joan University Hospital, Internal Medicine Department, Institut d'Investigació Sanitària Pere Virgili, Rovira I Virgili University, Catalonia, Spain.