By Marie Sanders When asked about trendsetters, most people will get the correct definition but know very little when it comes to the functionality or how it works. Well, most persons that will require this will be the athletes, infants and also normal persons. Because of this, it is important that know how they function and also the symptoms that one can look out for. Keep reading to know more about the pacemaker. Well, with most persons being susceptible to this heart failure disease, then...