Effect of different challenge doses after repeated citalopram treatment on extracellular serotonin level in the medial prefrontal cortex: In vivo microdialysis study. - Muraki, Ihoko; Inoue, Takeshi; Hashimoto, Shinji; Izumi, Takeshi; Koyama, Tsukasa (Psychiatry & Clinical Neurosciences, 2008)