title: Rate-modulated pacing: are we adept at determining what is physiologic?
authors.forename: Mark H
authors.initials: MH
authors.lastname: Schoenfeld
mesh_terms: D002304:Cardiac Pacing, Artificial / Q000191:economics / Q000379:methods* / Q000592:standards*; D015444:Exercise / Q000502:physiology; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D018579:Patient Selection; D013997:Time Factors