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External Data Source

Source

Regular Expression
(((0[1-9]|(1|2)[0-9]|3[0-1])\/(0(1|3|5|7|8)|1(0|2)))|((0[1-9]|(1|2)[0-9]|30)\/(0(4|6|9)|11))|((0[1-9]|(1|2)[0-9])\/02))\/[0-9]{4}