title: Monitoring movement: an electronic event counter.
authors.forename: D
authors.initials: D
authors.lastname: Rafferty
authors.forename: L
authors.initials: L
authors.lastname: Brackenridge
authors.forename: F
authors.initials: F
authors.lastname: Bell
mesh_terms: D002138:Calibration; D004867:Equipment Design; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D009068:Movement / Q000502:physiology*