Review Article
Association between eNOS 4b/a Polymorphism and the Risk of Diabetic Retinopathy in Type 2 Diabetes Mellitus: A Meta-Analysis
Table 1
Main characteristics of included studies in the meta-analysis.
| Author | Year | Country | Ethnicity | Case/control | Genotyping methods |
| Awata et al. [12] | 2004 | Japan | Asian | 117/109 | PCR | Cheema et al. [20] | 2012 | Indian | Asian | 842/604 | PCR-RFLP | Chen et al. [28] | 2007 | Ghana and Nigeria | West African | 68/301 | PCR | Cilenšek et al. [4] | 2012 | Slovenia | Caucasians | 172/405 | PCR | de Syllos et al. [14] | 2006 | Brazil | Caucasians | 56/114 | PCR | Ezzidi et al. [19] | 2008 | Bahrain | Asian | 383/489 | PCR-RFLP | Li et al. [26] | 2010 | china | Asian | 87/79 | PCR | Mehrab-Mohseni et al. [21] | 2011 | Iran | Asian | 41/179 | PCR | Petrovič et al. [18] | 2008 | Slovenia | Caucasians | 283/143 | PCR | Santos et al. [13] | 2012 | Brazil | Caucasians | 407/184 | PCR | Suganthalakshmi et al. [22] | 2006 | India | Asian | 120/90 | PCR-RFLP | Sun et al. [24] | 2004 | china | Asian | 147/155 | PCR-RFLP | Uthra et al. [23] | 2007 | India | Asian | 187/188 | PCR | Yue et al. [27] | 1994 | china | Asian | 154/167 | PCR |
| Zhang et al. [25] | 2005 | china | Asian | 119/203 | PCR |
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