1.   At the same time, Marc Lallemant, a Harvard University investigator working in Thailand on behalf of the health institutes, insisted he would not use dummy medication.

2.   For the next year, the children were randomly assigned to continue with amphetamine or to receive a dummy medication.

3.   Katz is particularly concerned because the regulations allow doctors to enroll unconscious patients in studies in which some subjects are given dummy medication.

4.   The use of dummy medication has always been controversial in medical research, but never more so than with studies involving AIDS.

5.   They were randomly assigned to take hormone replacement therapy or a dummy medication.