Definition of clinical governances and listing its pillar?

1) Definition of clinical governances and listing its pillar? The chosen issues related to which pillar of clinical governance and why? 2) Very brief overview of the rigour of each and also provide strength and limitation 3) Which is the most rigorous study?Why? 4) Which study?National hierarchy and medical council hierarchy evidence? comparing and chosing one of the best studies? 5) Identity, describes a tool, why did you select the tool? 6) Google appraisal tool? why? Do you choose the appraisal? 7) Findings? Very briefly say what each individual study found? What 3 studies found an overall contribution to the body of knowledge on that topic?