title: Systems of life. No 162. Senior systems. 27.
authors.forename: A
authors.initials: A
authors.lastname: Roberts
mesh_terms: D000368:Aged; D000375:Aging; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000503:physiopathology*; D005260:Female; D006321:Heart / Q000254:growth & development* / Q000502:physiology / Q000503:physiopathology; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008297:Male