Thank you for viewing. The product has been cut, so the condition is listed as poor, but there are no writings or markings. Recommended for those who want to start studying electrocardiograms (ECG)! Recommended for those who want to take the ECG certification exam! A training text to deepen the understanding of ECGs. - Title: ECG Training 100 - Publisher: EP University - Contents: Understanding and explanation of ECGs - Features: Training to improve clinical skills