1. Department of Health Services Administration and Policy, Temple University , 1301 Cecil B. Moore Ave, Philadelphia, PA 19122, USA
2. Department of Health Services Management, Umm Al-Qura University , 7392 Al Jamiah, Mecca 24243, Saudi Arabia
3. Department of Epidemiology and Biostatistics, Temple University , 1301 Cecil B. Moore Ave, Philadelphia, PA 19122, USA