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. 2022 Mar 28;8(1):31. doi: 10.1038/s41537-022-00244-w

Fig. 2. Bidirectional Mendelian randomization study design.

Fig. 2

β is the causal effect of genetic instruments of SCZ on IBD, whereas β´ is the causal effect of genetic instruments of IBD on SCZ. SCZ schizophrenia, IBD inflammatory bowel disease.