HC Deb 22 February 1971 vol 812 c33W
116. Mr. Meacher

asked the Secretary of State for Social Services how many experimental tests for medical research purposes were carried out, in the last year for which information is available, on National Health Service patients in teaching hospitals, and how many on private patients; and what proportion these figures represent of total patients in each of these two categories.

Mr. Alison

This information is not available.