Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mediocre

This book is meant for people in medical school. It may actually be less advanced then Dubin. I may be biased there as I used Dubin in medical school and then everything was new. If you have gone through a basic book then this may be a waste of your time and money. It doesnot deal in depth with arrhythmias, or with T wave inversions or the use of vector EKG which may help in tight spots.