16
Participants
Start Date
November 30, 1994
Primary Completion Date
March 31, 1996
Study Completion Date
March 31, 1996
10% N2O
20% N2O
30% N2O
40% N2O
University of Chicago, Anesthesia & Critical Care, Chicago
National Institute on Drug Abuse (NIDA)
NIH
University of Chicago
OTHER