1.   All company data obtained were screened to make sure they were Scotch Whisky specific, and did not relate to other spirits related sales and production costs.

2.   He said trade with China should be free, but should be screened to make sure items of national security are not exported.

3.   The smokers tested had been screened to make sure they had no other known risk factors for heart disease, he said.

4.   They were screened to make sure they had the mental competence and physical strength to take part in the study.