Models of integrated care.

This article describes the range of options for integrating medicine and psychiatry, with a focus on the advantages and limitations of each model. The models were developed in different countries with specific health care cultures. This article illustrates the range of in- and outpatient options as currently practiced, with case reports from practitioners when possible, and describes qualifications for practicing in each model, the settings, the patient populations, the relevant financial issues, and the advantages and disadvantages of practicing in each model. It closes with comments on the next steps for advancing integrated care and the barriers to be overcome.