title: An electrocardiogram that demonstrates grouped beating: what is the rhythm?
authors: Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor 48109-0022, USA.
authors: F
authors: F
authors: Morady
mesh_terms: D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male