 19. The subject has a three month prior history of regular alcohol consumption exceeding an average weekly intake of 28 units or an average daily intake of greater than 3 units for males, or an average weekly intake of 21 units or an average daily intake of greater than 2 units for females. 1 unit is equivalent to a half-pint 284mL of beerlager; 25mL measure of spirits or 125mL of wine; or a positive alcohol breath test at the screening visit 