1. Second Propedeutic Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, Hippocration Hospital, Thessaloniki, Greece
2. Lipid and Atherosclerosis Unit, IMIBIC/Reina Sofia University Hospital, University of Cordoba, Cordoba, Spain
3. Department of Clinical Biochemistry, Royal Free Hospital Campus, University College London Medical School, University College London (UCL), London, United Kingdom