87
Participants
Start Date
April 30, 2003
Primary Completion Date
December 31, 2007
Study Completion Date
December 31, 2007
Naltrexone
Naltrexone
Placebo
Placebo
University of Texas Health Sci Cntr Houston, Houston
National Institute on Drug Abuse (NIDA)
NIH
The University of Texas Health Science Center, Houston
OTHER