1. Department of Psychiatry, National Clinical Research Center for Mental Disorders, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
2. Xiang Ya Nursing School, Central South University, Changsha, Hunan, China
3. Department of Psychiatry at the Center for Addiction & Mental Health, University of Toronto, Toronto, Ontario, Canada
4. Clinical Nursing Teaching and Research Section, The second Xiangya Hospital of Central South University, Changsha, Hunan, China