31.   And a new review of published studies casts doubt on the idea that heading the ball caused cognitive deficits.

32.   The analysis of six already published studies appears in the April issue of the Journal of Genetic Counseling.

33.   He assessed a range of published studies which look at the occurrence of tiny, harmless clusters in the human genome.

34.   British trades unions have published studies recently showing that the number of people who should be classed as unemployed was twice the official total.