1. From the Bioengineering & Chronobiology Laboratories; Atlantic Research Center for Information and Communication Technologies (atlanTTic); Universidade de Vigo, Spain (R.C.H., A.M., J.R.F.).
2. Department of Biomedical Engineering, Cockrell School of Engineering, The University of Texas at Austin (R.C.H., M.H.S.)
3. Department of Internal Medicine, McGovern School of Medicine, The University of Texas Health Science Center at Houston (M.H.S.).