The only thing worse than a pedophile is a Dubinophile. That book is trash IMO. I prefered "The Only EKG Book You'll Ever Need" - but that book has some serious problems too, such as a one sentence per page format (the author really tries to dumb things down to a 1st grader picture book format which is really annoying), and also that the title is wrong, because if that is the only EKG book you'll ever use, then I hope you are becoming a radiologist or dermatologist.