There has been data ("Normal Electrophysiology, Substrates, and the Electrocardiographic Diagnosis of Cardiac Arrhythmias: Part I, an Issue of the Cardiac Electrophysiology Clinics, E-Book (Clinics: Internal Medicine)") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Sun Dec 15 00:37:14 2019, so the data displayed here has been removed .