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BMC Medical Research Methodology > 2016 > 16 > 1 > 1-14
Cognitive Therapy and Research > 2014 > 38 > 3 > 249-260
BMC Medical Research Methodology > 2016 > 16 > 1 > 1-14
Cognitive Therapy and Research > 2014 > 38 > 3 > 249-260