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Bias and causal associations in observational research

1.5K

Citations

36

References

2002

Year

References

YearCitations

1959

14.8K

2015

7.3K

1965

6.8K

1995

5.5K

1998

3.6K

1991

3.5K

1979

2.1K

1988

1.9K

1978

1.6K

1985

961

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