21.   Researchers cannot yet claim an overall survival advantage from the chemo-first approach, partly because they have not studied enough cases.

22.   Researchers into the whys and wherefores of violent crime still study the case of the Papin sisters, Christine and Lea, with fascinated horror.

23.   So by studying SIDS cases in Louisiana, Painter found that exposure of the infant to smoking after birth and never having been breast-fed were important additional risk factors.

24.   Supreme Court Justice Mauricio Correa asked for more time to study the case before delivering a verdict.

25.   Susan Sturm, a University of Pennsylvania law professor who has studied defamation cases, says employers must recognize that there are gray areas.

26.   The Federal Bureau of Investigation agreed this month to send profilers to Juarez to study the case, a spokesman in El Paso said.

27.   The USDA, however, has said the case has been studied enough.

28.   While Miller studies the case, he sends a video for Luke to study him.

29.   Widnall is still studying the case with her top advisers, a senior Air Force official said.

30.   Police took several documents pertaining to the loans to study the case before questioning several bank staff.