DOI: 10.1055/s-00000036

Laryngo-Rhino-Otologie

References

Reid BC, Alberg AJ, Klassen AC, Koch WM, Samet JM.
The American Society of Anesthesiologists’ class as a comorbidity index in a cohort of head and neck cancer surgical patients. 
Head Neck 2001; 23: 985-994  

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