title: II. Theoretical considerations and methods.
mesh_terms: D000403:Airway Resistance; D003201:Computers; D004947:Esophagus / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis; D008170:Lung Compliance; D008176:Lung Volume Measurements / Q000379:methods; D008954:Models, Biological; D010993:Plethysmography, Whole Body / Q000295:instrumentation / Q000379:methods; D011312:Pressure; D012123:Pulmonary Ventilation; D012119:Respiration; D012129:Respiratory Function Tests / Q000379:methods*; D012140:Respiratory Tract Diseases / Q000175:diagnosis; D014692:Ventilation-Perfusion Ratio; D014939:Work of Breathing