An arrhythmia is when your heart has an abnormal rhythm. The heart usually has an S1 and an S1, that makes up the lub, dub that you hear when you listen to your heart. People can have an S3 or S4 or...
Complaint is the gap between customer's expectations and the actual value delivered by the product or service. In general, a complaint is an expression of displeasure, such as poor service at a...