 - Have an average weekly alcohol intake that exceeds 21 units per week males up to age 65 and 14 units per week males over 65 and females, or are unwilling to stop alcohol consumption from 48 hours before each admission until discharge from the unit, and to limit alcohol intake to a maximum of 2 unitsday on all other days from screening through 48 hours prior to the follow-up visit. 1 unit 12 ounces oz or 360 mL of beer; 5 oz or 150 mL of wine; 1.5 oz or 45 mL of distilled spirits 