1 Area del Corazón del Hospital Universitario Central de Asturias, Avda Roma s/n, Oviedo, Spain. Electronic address: mmartinf7@hotmail.com.
2 Area del Corazón del Hospital Universitario Central de Asturias, Avda Roma s/n, Oviedo, Spain.
3 Bone and Mineral Research Unit, IRSIN, Hospital Universitario Central de Asturias, REDinREN from ISCIII, Area del Corazón Hospital Universitario Central de Asturias, Avda Roma s/n, Oviedo, Spain.
4 Cardiac Surgery, Hospital Universitario Central de Asturias, Area del Corazón Hospital Universitario Central de Asturias, Avda Roma s/n, Oviedo, Spain.