title: A case of bifocal premature ventricular contractions exhibiting bigeminy with an alternating QRS morphology.
authors: Division of Cardiovascular Diseases, University of Alabama at Birmingham, Birmingham, Alabama 35294-0019, USA. takumi-y@fb4.so-net.ne.jp
authors: Takumi
authors: T
authors: Yamada
authors: H Thomas
authors: HT
authors: McElderry
authors: Harish
authors: H
authors: Doppalapudi
authors: G Neal
authors: GN
authors: Kay
mesh_terms: D017115:Catheter Ablation; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008875:Middle Aged; D018879:Ventricular Premature Complexes / Q000175:diagnosis* / Q000601:surgery*