11.   But experts cautioned that it would be premature to conclude that crime rates were exhibiting a long-term downward trend.

12.   But experts caution against tranquilizers.

13.   But experts caution that all tallies are tentative until the rules of voting have been established.

14.   But experts caution that CBT is just one training option for workers.

15.   But experts cautioned against now dropping fish from the diet.

16.   But heart disease experts cautioned that the study did not prove an effect and some questioned the findings.

17.   But experts caution that the numbers are incomplete because reporting to the FBI is voluntary.

18.   But experts caution that the technique is still highly experimental and not likely to be widely adopted until more testing is done.

19.   But legal experts cautioned that prosecutors presented only enough evidence at the hearing to have Simpson bound over for trial.

20.   But many experts caution investors not to buy a winning stock only on this or any other psychological theory.