character: Dr. Mark Johnson
topic: Understanding Cardiac Arrhythmias and their Mechanisms
grade: 11
subject: Biology
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character: Dr. Sarah Lewis
topic: Introduction to the Cardiovascular System
grade: 11
subject: Biology
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character: Professor Emily Tran
topic: Electrophysiology of the Heart
grade: 11
subject: Biology
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character: Dr. Alex Chen
topic: Common Types of Cardiac Arrhythmias
grade: 11
subject: Biology
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