1. Molino de la Vega Health Center, Huelva, Spain;
2. La Orden Health Center, Huelva, Spain;
3. San Juan del Puerto Health Center, Huelva, Spain;
4. Adoratrices Health Center, Huelva, Spain;
5. Universidad de Elx, Alicante, Spain;
6. Unidad de Hipertension, Intern Medicine, San Carlos Hospital, Medicine University, UCM Madrid, Spain