title: Simplified estimation of energy metabolism by a new portable indirect calorimeter: its validity and clinical epidemiological application.
mesh_terms: D002153:Calorimetry, Indirect / Q000295:instrumentation / Q000379:methods; D004734:Energy Metabolism / Q000502:physiology*; D006801:Humans; D013223:Statistics as Topic / Q000295:instrumentation / Q000379:methods