[1]Department of Nursing, Emei Sanitarium of Chengdu Military Region, Emeishan, Sichuan 614200, China;
[2]Department of Nursing, General Hospital of Chengdu Military Region, Chengdu, Sichuan 610083, China;
[3]Department of Nursing, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai 200433, China;