Malpositioning of endotracheal catheters.
D000328:Adult; D000770:Anesthesia, Endotracheal; D002758:Cholangiography; D002763:Cholecystectomy; D005260:Female; D006801:Humans; D009765:Obesity; D001261:Pulmonary Atelectasis / Q000209:etiology; D013902:Radiography, Thoracic