1. Department of Health Policy and Management, School of Management, Jiangsu University , XueFu Road 301, Zhenjiang 212013, PR China
2. Department of Social and Political Sciences, Brunel University London , Kingston Ln, London, Uxbridge UB8 3PH, UK
3. College of Nursing, Chamberlain University , 1951 Kidwell Dr, Tysons Corner, VA 22182, USA