1. Servicios Sanitarios del Área de Salud de El Hierro; Valle del Golfo Health Center; Islas Canarias Spain
2. Design of Studies and Scientific Writing Laboratory in the ABC School of Medicine; Santo André, São Paulo Brazil
3. Coronary Center of the Messejana Hospital Dr. Carlos Alberto Studart Gomes; Fortaleza, Ceará Brazil
4. Heart Center, Tampere University Hospital and Faculty of Medicine and Life Sciences; University of Tampere; Tampere Finland