21.   But subsequent studies seeking to link the vaccine to rates of autism in Great Britain and Sweden failed to show a connection.

22.   But subsequent studies showed that the project would be an environmental disaster.

23.   Critics attacked their methodology, and subsequent studies in the United States and Europe produced conflicting results.

24.   However, subsequent studies determined that the researchers themselves may have been racially biased in determining what they considered to be persuasive evidence.

25.   In a subsequent study, participants who read the pro-catharsis article and then hit the punching bag were more aggressive toward partners in the competitive task.

26.   Subsequent studies demonstrated a similar relationship between socioeconomic status and mortality in the United States and Canada.

27.   Subsequent studies have yielded mixed results.

28.   Subsequent studies indicated that high cholesterol levels were a significant risk in heart disease.

29.   Subsequent studies showed similar results in humans, especially in men with diabetic neurological impairments.

30.   Subsequent studies confirmed that hepatitis C is a particularly serious problem in the veteran community.