The Theta/Beta Ratio as an Indicator of Evolution in Pediatric Patients Treated for Attention-Deficit/Hyperactivity Disorder (ADHD) - A Retrospective Study. - María Evangelina Herrán-Paz; Raúl Ortiz-Monasterio; Antonio Rodríguez Díaz; Olivia Mendoza; Juan R. Castro 001; Hector J. Willys (BIOSIGNALS, 2015)