title: A simplified closing-volume method suitable for field use.
mesh_terms: D000367:Age Factors; D006801:Humans; D008168:Lung / Q000502:physiology; D008722:Methods; D009584:Nitrogen / Q000378:metabolism; D010101:Oxygen Consumption; D012119:Respiration; D012129:Respiratory Function Tests / Q000295:instrumentation*; D013147:Spirometry; D014797:Vital Capacity
chemical_list: D009584:Nitrogen