Reduced Anxiety and Depression-Like Behaviours in the Circadian Period Mutant Mouse Afterhours Keers, Robert ; Pedroso, Inti ; Breen, Gerome ; Aitchison, Kathy J. ; Nolan, Patrick M. ; Cichon, Sven ; Nöthen, Markus M. ; Rietschel, Marcella ; Schalkwyk, Leonard C. ; Fernandes, Cathy Abstract Publication: PLoS ONE Pub Date: June 2012 DOI: 10.1371/journal.pone.0038263 Bibcode: 2012PLoSO...738263K