What are the key differences between the separated and integrated models of healthcare in terms of: 1. Vertical integration 2. Horizontal integration 3. Gatekeeping 4. Patient choice 5. GP practices?

Separated Model: 1. Vertical Integration: Insurers and providers belong to the same organization. 2. Horizontal Integration: GPs and specialists belong to the same organization. 3. Gatekeeping: Mandatory. 4. Patient Choice: Limited to contracted providers. 5. GPs: Group practice. Integrated Model: 1. Vertical Integration: Insurers and providers are independent entities. 2. Horizontal Integration: Primary and secondary care is provided by separate entities. 3. Gatekeeping: Discretionary. 4. Patient Choice: Choice among all providers. 5. GPs: Solo practice.