51.   The program examines the effect of sanctions on the Iraqi population.

52.   The study, conducted at the Johns Hopkins University School of Medicine in Baltimore, examined the effect of a premeal snack of yogurt on food intake at lunch.

53.   The scientific hypothesis behind the study, the latest in a growing number examining the effects of biodiversity, is simple.

54.   The study examined the effects of several programs that provided families with extra money or noncash benefits, like child care subsidies, if they worked.

55.   The University of Florida study examined the effect of different levels of folate on blood levels of homocysteine, an amino acid that requires folate in order to metabolize.

56.   Those taking part in the clinical trial examining the effects of hormone replacement therapy must go off estrogen for three months before being assigned hormones or a placebo.

57.   Thomas Sargent examined the effect on output of the ends of four hyperinflations.

58.   To study the mystery, Dhabhar is examining the effects of psychological stress on immune reactions in the skin.

59.   Vencill examined the effects of heat on the engineered soybeans after farmers in the southern state alerted him to unexpected crop losses.

60.   We examine the effect of contraception in preventing HIV in Zimbabwean women.