1. Department of Psychiatry, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, P.R. China.
2. Basic Medical College, Tianjin Medical University, Tianjin, P.R. China.
3. Department of Psychiatry, Tianjin Anding Hospital and Tianjin Mental Health Institute, Tianjin, P.R. China.
4. Henan Institute of Science and Technology, Xinxiang, P.R. China.
5. Department of Psychiatry, the Fifth Hospital of Kaifeng, Kaifeng, P.R. China.
6. Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, P.R. China.