Fredrikson, Matsa,b; Annas, Petera; Hettema, John M.c
aDepartment of Psychology, Uppsala University, Uppsala
bDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
cDepartment of Psychiatry, Virginia Institute for Psychiatry and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia, USA
Correspondence to Mats Fredrikson, PhD, DrMedSci, Department of Psychology, Uppsala University, Uppsala, Sweden SE - 75142 Tel: +46 18 471 2112; fax: +46 18 471 2400;e-mail: [email protected]
Received October 23, 2014
Received in revised form February 3, 2015
Accepted April 8, 2015
doi: 10.1097/YPG.0000000000000088