Table 1: The included studies and their characteristics.

S. No	Author	Type of study	Year of Publication	No of subjects	Age (Years)	Sex	Serum Ethanol level
1	Cardy9	Case control	1996	10	23-27	6-Female, 4-Male	25-75 mg/dl
2	Priest10	Case control	1996	37	Not reported	Not reported	Unknown
3	Uyarel8	Crossover study	2005	10	25-33	Male	85-134 mg/dl
4	Aasebo3	Case control	2007	84	39 (mean)	52-Male,32-Female	367 mg/dl