Authors	Year of publication	No. of samples	WLE (%)				NBI (%)
Authors	Year of publication	No. of samples	Sensitivity	Specificity	PPV	NPV	Sensitivity	Specificity	PPV	NPV
Yi Hui Wen et al. [15]	2012	285	71.2	95.4	82.5	91.7	93.9	94.1	82.7	98.1
Wen-Hung Wang et al. [10]	2012	106	37.5	92.9	N/A	N/A	87.5	74.5	N/A	N/A
Hai Di Yang et al. [11]	2012	1854	90.3	75.4	11.3	99.6	100	99.2	81.6	100%
Ching Yin Ho et al. [12]	2013	211	22.2	100	N/A	N/A	44.4	100	N/A	N/A
Xiao Guang Ni et al.* [16]	2017	290	85.2	51.3%	82.1	59.6	79.5	91.3	96.0	62.9