TY - BOOK AU - Aehlert,Barbara TI - ECGs made easy SN - 9780323401302 PY - 2018///], ©2018 CY - St. Louis, Missouri PB - Elsevier KW - Electrocardiography KW - Methods KW - Arrhythmias, Cardiac KW - diagnosis KW - Programmed Instruction N1 - Includes bibliographical references and index ER -