stethoscope and red heart with electrocardiogram. ecg curve in the background.

background cardiac cardiacdiseases cardio cardiogram cardiograph cardiology cardiovascular clinic clinical curing curve devices diagnosis disease doctor ecg electrocardiogram electrocardiograph electrocardiography equipment graph graphic gray heal heals health healthcare healthy heart hospital ill illness illustration illustrations medical medicaltool parapharmaceutics patient pharmaceutics phonendoscope red render rendered science stethoscope therapeutic therapy tool tools white