Dr. Agustin Castellanos, who helped develop the modern pacemaker, dies at 89 - Miami Herald

Miami HeraldDr. Agustin Castellanos, who helped develop the modern pacemaker, dies at 89Miami HeraldDr. Agustin Castellanos, the only child of an international authority on children's heart conditions who was twice nominated for the Nobel Prize, made his own mark in cardiovascular research. His nearly 60 years of study and accomplishment would lead ...