1.   An influential study last year cast doubt on the efficacy of AZT in treating patients who are HIV positive but not do yet have full-blown AIDS.

2.   His absence was apparently an acknowledgment that the narrow margin had cast doubt upon his previously unquestioned effectiveness as a campaigner.

3.   In Macedonia, fierce fighting cast doubt on prospects of agreement between parties representing the Slav majority and the substantial Albanian minority in the southern Balkan republic.

4.   Kindler would not discuss whether any information had been uncovered that casts doubt on the confessions or convictions.

5.   The announcement came after the company disclosed in March that its auditors had cast doubt on its ability to remain in business.

6.   The newspaper said two of those kidnapped were German, but the German Embassy cast doubt on the report.

7.   A Philippine Navy spokesman cast doubt Friday on earlier armed forces reports that two intruding foreign vessels were flying Chinese flags.

8.   But the White House cast doubts on that earlier Tuesday, saying a decision had not been reached on the venue and the date.

9.   Many claimed to be fleeing the one-child policy, but immigration authorities have cast doubt on some of their stories.