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. 2018 Jul 2;12:123. doi: 10.3389/fnbeh.2018.00123

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Copyright © 2018 Zeng, Su, Wang, Wang, Vollstädt-Klein, Chen and Ye.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Neural correlates underlying the main effect of cue category. HAG, Heroin abstinent group; HCG, Health control group; C_Drug, neutral drug pictures; C_Tool, neutral tool pictures; C_Action, neutral action pictures.