11.   Extreme caution should be exercised when buying part-worn tyres.

12.   Exercise caution when using these chemicals.

13.   Caution must be exercised, however, in patients with an in situ gall bladder.

14.   Until long term studies are available, caution should be exercised in the use of colonic cell proliferation indices as markers of neoplastic potential in human dietary intervention studies.

15.   The spokesman also stressed that anyone receiving what he or she considered to be a suspect package should exercise extreme caution and contact the police immediately.

16.   American embassies, schools and other facilities closed throughout the Middle East as security alerts warned expatriates to exercise extreme caution.

17.   And even if new secrecy is possible, he said, it would be wise to exercise caution.

18.   And do exercise caution.

19.   And the media in general need to exercise more caution in projecting results now that they all depend on a single source of electoral data.

20.   And the decision has prompted some independent insurance experts to suggest that consumers exercise extra caution before buying a new Prudential life insurance policy.