1. Introduction In the last few decades, various issues have been raised in the healthcare sector along with changing healthcare landscape. Adverse events in healthcare have still been one of the most crucial social problems [1]. In addition, health-care officers and authorities have continuously received strong pressures for cost containment due to increase of expenditure that are attributed to aging population ,nature of contemporary diseases and the extensive use of costly biomedical technology [2]. They have been required to achieve higher efficiency and effectiveness in providing services to their clients [3].