Abnormal Resting State Corticolimbic Blood Flow in Depressed Unmedicated Patients With Major Depression: A 15O-H2O PET Study - Monkul, E. Serap; Silva, Leandro A. P.; Narayana, Shalini; Peluso, Marco A. M.; Zamarripa, Frank; Nery, Fabiano G.; Najt, Pablo; Li, John; Lancaster, Jack L.; Fox, Peter T.; Lafer, Beny; Soares, Jair C. (Human Brain Mapping, 2012)