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. Author manuscript; available in PMC: 2020 Feb 24.
Published in final edited form as: Mol Psychiatry. 2017 Dec 12;23(9):1929–1936. doi: 10.1038/mp.2017.234

Figure 1.

Figure 1.

Flow chart of study inclusion. Diagram depicts the systematic search progression used in this study. Boxes attached to the body of the diagram by a dashed line represent removed studies. Boxes attached to the body of the diagram by dotted lines represent data-input methods. Grayed boxes indicate included studies. *The six genes chosen for further meta-analysis exceed 36 (represented in diagram as ‘36 included in further analysis’) because some studies included more than one gene and/or genetic variant.