Yuan, Chengmei, Zhen Wang, Sabra S. Inslichi, Shannon E. McCaslin, Thomas J. Metzler, Clare Henn-Haase, Brigitte A. Apfel, Huiqi Tong, Thomas C. Neylan, Yiru Fang et al. "
Protective Factors for Posttraumatic Stress Disorder Symptoms in a Prospective Study of Police Officers."
Psychiatry Research 188, no. 1 (2012): 45-50.