作者单位：Ctr Addict & Mental Hlth, Res Imaging Ctr, Human Brain Lab, Toronto, ON, Canada[1]Addict Imaging Res Grp, Toronto, ON, Canada[2]Univ Western Ontario, Dept Psychiat, London, ON, Canada[3]Def Res & Dev Canada, Toronto Res Ctr, Dept Natl Def, Toronto, ON, Canada[4]Canadian Forces Hlth Serv, Dept Natl Def, Ottawa, ON, Canada[5]
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