1. Cardiology Service, Insular-Materno Infantil University Hospital, Las Palmas de Gran Canaria, Spain
2. Medical and Surgical Sciences Department, Faculty of Health Sciences, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
3. Department of Biochemistry and Clinical Analyses, Insular-Materno Infantil University Hospital, Las Palmas de Gran Canaria, Spain
4. Ophthalmology Service, Dr. Negrín University Hospital of Gran Canaria, Las Palmas de Gran Canaria, Spain