51.   Officials at the National Cancer Institute and American Cancer Society said more research was needed before public health recommendations could be made.

52.   One reason is that the FDA has little evidence of a safety problem, Kessler said, although everyone admits that research is urgently needed.

53.   Preparing for the role hardly needed much research.

54.   People on both sides of the argument agree that more research is needed.

55.   Research is needed on advanced nuclear systems that use less atomic fuel, are more efficient and have greater safety margins than current ones.

56.   Roberts conceded there is currently little research proving conclusively a connection between computer use and learning, and she said such research is needed.

57.   Scientists caution that more research is needed and that introducing transgenic mosquitoes into malaria-infected regions is years away.

58.   The APA says more research is needed on the topic before it can be accepted in the counseling community.

59.   The apparent gender difference may perhaps be explained by differences in blood circulation or medication use, although more research is needed, the authors said.

60.   The agency stopped short of issuing official recommendations because more research is needed, said Addiss.