11.   Many doctors now caution against giving children fresh apple juice or cider, and small cider makers fear that more regulations could put them out of business.

12.   Some doctors caution that medical research has not yet conclusively proved that link.

13.   That may eliminate any man who might try the drug just to enhance performance -- an abuse doctors have cautioned against.

14.   But doctors caution that steroid medications can cause some serious side effects and must be used very carefully.

15.   But doctors cautioned that Havel is not out of trouble yet.

16.   Doctors caution that it will take several years to prove the treatment truly slows or cures the disease.

17.   Doctors caution, however, that more research is needed to be sure the treatment really works.

18.   Doctors caution they cannot prove the vitamin is harmful during cancer treatment.

19.   Doctors caution that it will take several years to prove the treatment truly slows or cures the disease, but early signs are promising.

20.   Doctors caution that steroid medications, even cream versions, can cause some serious side effects and must be used very carefully.