Blood and urinary metabolomic evidence validating traditional Chinese medicine diagnostic classification of major depressive disorder oleh Lan-Ying Liu, Hong-Jian Zhang, Li-Yuan Luo, Jin-Bao Pu, Wei-Qing Liang, Chun-Qin Zhu, Ya-Ping Li, Pei-Rong Wang, Yuan-Yuan Zhang, Chun-Yu Yang, Zhang-Jin Zhang