S.No	Author	External DCR (success rate) (%)	Endonasal DCR (success rate) (%)
1	Cokkesser et al. [9]	89.8	88.2
2	Dolman et al. [13]	90.2%	89.1
3	Tsirbas et al. [14]	100	93.5
4	Simon et al.[15]	70	84
5	Sharma [16]	90.5	88.5
6	Goyal et al. [19]	95	90
7	Karim et al. [17]	82.4	81.6
8	Walker et al. [10]	89.8	90.2%
9	Saha et al. [17]	96.7	90
10	Huang et al. [18]	87	77
11	Present study	91.6	93.6