1 Department of Physical Therapy, Occupational Therapy, Physical Medicine and Rehabilitation, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos (URJC), Universidad Rey Juan Carlos, Avenida de Atenas S/N, 28922, Alcorcón, Madrid, Spain. cesar.fernandez@urjc.es.
2 Department of Internal Medicine, Hospital Universitario Infanta Leonor-Virgen de La Torre, Madrid, Spain.
3 Department of Medicine, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain.
4 Department of Medicine, Saint Peter's University Hospital, New Brunswick, NJ, USA.
5 Department of Medicine, Monmouth Medical Center, Long Branch, NJ, USA.
6 Faculty of Medicine and Surgery, University of Santo Tomas, Manila, Philippines.
7 Department of Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, USA.
8 Clinical Laboratory, Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
9 Section of Clinical Biochemistry, Department of Neuroscience, Biomedicine and Movement, University of Verona, Verona, Italy.
10 Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.