DOI:
10.1055/s-00000036
Laryngo-Rhino-Otologie
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References
Gerbershagen HJ, Rothaug J, Kalkman CJ et al.
Determination of moderate-to-severe postoperative pain on the numeric rating scale: a cut-off point analysis applying four different methods.
Br J Anaesth 2011;
107: 619-626
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