Researchers seeking 21 to 45-year-old Boulder-Denver residents and CU students, faculty, staff and alumni planning to live in the Boulder/Denver Area for next 6 months; regular alcohol consumers. Compensation: Up to $200 for two meetings plus five telephone interviews. ELIGIBILITY: 21-45 years old. No removable metal in body. CONTACT: (303)-492-9147 or cuchange@colorado.edu (Please leave your name and a number where you can be reached.)