during the last 4 nights they were medicated in a double-blind cross-over test design with the benzodiazepine 8-chloro-6-phenyl-4h-s-triazolo ( 4,3-a ) - ( 1,4 ) benzodiazepine ( estazolam , bay k 4200 ) at a dosage of 2 mg and placebo .
C0005064
benzodiazepine
C0014892
estazolam