11
Participants
Start Date
August 31, 1995
Primary Completion Date
November 30, 1996
Study Completion Date
November 30, 1996
20% N2O
40% N2O
60% N2O
80% N2O
University of Chicago, Anesthesia & Critical Care, Chicago
National Institute on Drug Abuse (NIDA)
NIH
University of Chicago
OTHER