11.   Boebeck, like representatives of other U.S. industries, says the move needs further study because South American economies are so diverse.

12.   Additional studies are needed in order to confirm such findings nationally and to develop guidelines for when chemotherapy should be stopped in terminal cases, Emanuel said.

13.   Additional studies were needed with broader samples that looked at the protein specifically derived from StarLink rather than a substitute bacteria, it said.

14.   All the seeds now under EPA review were approved for human use, but some activists on biotechnology issues insist that more studies are needed.

15.   Bush made the ludicrous claim that we need more studies before we could confirm global warming.

16.   But parents are still worried, and researchers acknowledge the question needs further study.

17.   But scientists have been skeptical, saying that pesticides may play a role but that more study is needed.

18.   But the project, he said, is still only a beginning, and many more studies will be needed before researchers can offer patients much solace.

19.   But Thompson cautioned that more studies are needed.

20.   But they said more study is needed.