Table 1. Duration (min) of Statistically Significant Impairment (tss)(Impairment Greater Than That Seen with Placebo) and Impairment (t sub alc) Similar to That Seen with Alcohol at a Blood Alcohol Concentration of 0.11%, of the Various Psychomotor Tests and the Short-Term Memory Test Caused by Fentanyl, Midazolam, and Propofol