Signs of Mood and Anxiety Disorders in Chimpanzees Ferdowsian, Hope R. ; Durham, Debra L. ; Kimwele, Charles ; Kranendonk, Godelieve ; Otali, Emily ; Akugizibwe, Timothy ; Mulcahy, J. B. ; Ajarova, Lilly ; Johnson, Cassie Meré Abstract Publication: PLoS ONE Pub Date: June 2011 DOI: 10.1371/journal.pone.0019855 Bibcode: 2011PLoSO...619855F