title: Aberration versus ectopy--1988.
authors: M
authors: M
authors: Conover
mesh_terms: D005117:Cardiac Complexes, Premature / Q000175:diagnosis*; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D004562:Electrocardiography; D006801:Humans; D013610:Tachycardia / Q000175:diagnosis*