1.   And doctors caution that Viagra will not make normal men sexual virtuosos.

2.   But doctors cautioned that Viagra is not a pill that will make normal men sexual virtuosos.

3.   But doctors are now cautioning that too much aspirin may actually be too much of a good thing.

4.   But doctors privately cautioned the team that the extent of the injury was not yet known.

5.   Doctors caution against taking infants with diarrhea on board, as frequent diaper changing and thus spreading of germs is necessary and dehydration of the infant likely.

6.   Doctors caution, however, that robotic surgery has barely begun.

7.   Doctors caution, however, that any pregnancy in these women is high risk.

8.   Doctors cautioned Wright about his return to football, but he rehabilitated the knee and came back for his senior season.

9.   Each faces a long, painful struggle, and doctors caution that a few may not survive the fight.

10.   However, the doctors caution that no cure is in sight and they expect the AIDS virus to eventually outwit these drugs.