1[1]Ezri T,Szmuk P,Warters RD,et al.Difficult airway management practice patterns among anesthesiologists practicing in the United States:have we made any progress?[J].J Clin Anesth,2003,15(6):418-418.
2[2]Mellado PF,Thunedborg LP,Swiatek F,et al.Anaesthesiological airway management in Denmark:assessment,equipment and documentation[J].Acta Anaesthesiol Scand,2004,48(3):350-354.
3[3]Ferson D,Chi TL.Developments in general airway management[J].Thorac Surg Clin,2005,15(1):39-53.