Anterior cingulate cortex-related connectivity in first-episode schizophrenia: a spectral dynamic causal modeling study with functional magnetic resonance imaging oleh Long-Biao eCui, Jian eLiu, Liu-Xian eWang, Chen eLi, Yi-Bin eXi, Fan eGuo, Hua-Ning eWang, Linchuan eZhang, Wen-Ming eLiu, Hong eHe, Ping eTian, Hongbing eLu, Hong eYin