I need some help in the following:

The four approaches to quality assurance are: TQM, CQI, Lean & Six Sigma I need to select 2 and:

- Compare and contrast the two approaches that you select- focus on what is "similar" and what is "different" between the two approaches.

- Describe what unique contributions to quality each of the two approaches bring.

- Discuss whether or not either of the approaches are more useful to a given patient care setting as opposed to another (for instance, is one better applied to the ambulatory care setting as opposed to the emergency department setting).