Healthcare Organizations & Organizational Culture

Here is some background information as well:

The CEO of Jones Memorial has made organizational culture a major priority. He believes that changing the culture will affect how employees contribute to the hospital's mission.

You are a member of a work group whose task is to develop a report to senior managers articulating the need to manage organizational culture. The report should include the following:

* an explanation of organizational culture and its relationship to organizational mission
* an examination of organizational culture in at least three model health care organizations
* recommended action steps that can be used to modify organizational culture in Jones Memorial

I am having a hard time getting started and then also being able to find enough information on three organizations' culture that are answering what is being asked. Any information, help and/or suggestions would be appreciated.