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  Indian J Med Microbiol
 

Figure 4: Receiver operating characteristic curve. ROC curve was plotted which was significant at all the three levels with highest area under the curve for thyrohyoid membrane 0.99 and the least at vocal cord level 0.77, and was 0.92 at the level of hyoid bone. (VC: Vocal cord level, HYB: Hyoid bone level, THM: Thyrohyoid membrane level)

Figure 4: Receiver operating characteristic curve. ROC curve was plotted which was significant at all the three levels with highest area under the curve for thyrohyoid membrane 0.99 and the least at vocal cord level 0.77, and was 0.92 at the level of hyoid bone. (VC: Vocal cord level, HYB: Hyoid bone level, THM: Thyrohyoid membrane level)