Brain Imaging and Behavior (2012) - Comment
pubmed: 22045236  doi: 10.1007/s11682-011-9141-4  issn: 1931-7557  issn: 1931-7565 

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David R. Watson, Feng Bai, Suzanne L. Barrett, Aidan Turkington, Teresa M. Rushe, Ciaran C. Mulholland, Stephen J. Cooper