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Table 2 Relevant studies on 235delC mutation and NSHL

From: A systematic review and meta-analysis of 235delC mutation of GJB2 gene

No Author Score/ Grade No Author Score/ Grade
Studies in non-Asian populations
1 Dahl HM, et al. 2006 [4] 6A 7 Cheng X, et al. 2005 [23] 5B
2 Ramsebner R, et al. 2007 [5] 5B 8 Utrera R, et al. 2007 [33] 5B
3 Batissoco AC, et al. 2009 [11] 5B 9 Tang HY, et al. 2006 [20] 6A
4 Damalon V, et al. 2010 [34] 5B 10 Pollak A, et al. 2007 [35] 5B
5 Samanich J, et al. 2007 [36] 5B 11 Tóth T, et al. 2007 [37] 5B
6 Schimmenti LA, et al. 2008 [17] 6A 12 Neocleous V, et al. 2006 [38] 5B
Studies in East Asian and Southeast Asian populations
13 Snoeckx RL, et al. 2005 [39] 5B 23 Xiao ZA, et al. 2004 [26] 5B
14 Wattanasirichaigoon D, et al. 2004 [12] 5B 24 Wang SH, et al. 2009 [ 27] 6A
15 Park HJ, et al. 2000 [14] 6A 25 Hwa HL, et al. 2003 [28] 5B
16 Lee KY, et al. 2008 [16] 5B 26 Shi GZ, et al. 2004 [29] 6A
17 Abe S, et al. 2000 [19] 5B 27 Dai P, et al. 2007 [30] 6A
18 Ohtsuka A, et al. 2003 [10] 5B 28 Liu ZX, et al. 2002 [31] 5A
19 Tekin M , et al. 2010 [21] 5B 29 Liu YH, et al. 2002 [32] 6A
20 Kudo T, et al. 2000 [22] 5B 30 Chen GM, et al. 2011 [40] 5B
21 Wang YC, et al. 2002 [24] 6A 31 Guo YF, et al. 2008 [41] 6A
22 Chen D, et al. 2009 [25] 5B    
Studies in South Asian, West Asian and North Asian populations
32 Padma G, et al. 2009 [13] 6A 35 Baysal E, et al. 2008 [42] 6A
33 Bhalla S, et al. 2009 [43] 6A 36 Posukh O, et al. 2005 [18] 5B
34 Shalin H, et al. 2002 [15] 5B