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The COMT × BDNF interactions on gFCD with the connection thresholds ranged from 0.4 to 0.8. A: connection threshold = 0.4; B: connection threshold = 0.5; C: connection threshold = 0.6; D: connection threshold = 0.7; E: connection threshold = 0.8. [Color figure can be viewed in the online issue, which is available at http://wileyonlinelibrary.com.]
