Kaiser Permanente, a standout among managed health care systems, has become a model for how to deliver good health care cost-effectively. Concepts & Connections 6.3 describes how Kaiser Permanente has made vertical integration a central part of its strategy. What value chain segments has Kaiser Permanente chosen to enter and perform internally? How has vertical integration aided the company in building competitive advantage? Has vertical integration strengthened its market position? Explain why or why not.