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External Data Source

Source

Regular Expression
^((((0?[13578])|(1[02]))[\-]?((0?[1-9]|[0-2][0-9])|(3[01])))|(((0?[469])|(11))[\-]?((0?[1-9]|[0-2][0-9])|(30)))|(0?[2][\-]?(0?[1-9]|[0-2][0-9])))[\-]?\d{2}$