Ruggins, N R Site of upper airway obstruction in preterm infants with problematical apnoea. [electronic resource] - Archives of disease in childhood Jul 1991 - 787-92 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1468-2044 Standard No.: 10.1136/adc.66.7_spec_no.787 doi Subjects--Topical Terms: Airway Obstruction--complicationsApnea--etiologyElectrocardiographyFiber Optic TechnologyHeart--physiopathologyHumansInfant, NewbornInfant, Premature, Diseases--physiopathologyLaryngoscopesLaryngoscopy--methodsLarynx--physiopathologyMonitoring, Physiologic--instrumentationPharynx--physiopathology