%0 Journal Article %B JAMA %D 1990 %N 10 %P 1385-1389 %R 10.1001/jama.1990.03440100097014 %T The Existence of Publication Bias and Risk Factors for Its Occurrence %U https://doi.org/10.1001/jama.1990.03440100097014 %V 263 %8 1990-03-09