41.   More studies are needed, he said.

42.   Medical experts also have expressed concern that digital phones may interrupt the rate of pacemakers, although the issue needs further study.

43.   More studies are also needed on the impact of drugs on dialysis end stage kidney and liver disease and the interaction with antivirals.

44.   More studies are needed, Alberts said, noting that the number of people tracked was small for such cancer studies.

45.   More study is needed for the AZT-alone patients, it said.

46.   More study is needed on airport security checkpoints in the long run, he said.

47.   More studies are needed before the treatment can be recommended for widespread use.

48.   More study is needed, she said, before any individual takes an action based on the findings from this study.

49.   On the federal level, he said, further study was needed before a judgment could be made.

50.   Opponents said there is no proof of the problem, and it would need further study before Congress could pass legislation.