1. Comorbidity or multimorbidity: what’s in a name? A review of literature;Van Den Akker;European Journal of General Practice,1996
2. The expanded Chronic Care Model: an integration of concepts and strategies from population health promotion and the Chronic Care Model;Barr;Hospital Quarterly,2003
3. Descriptions of barriers to self-care by persons with comorbid chronic diseases;Bayliss;Annals of Family Medicine,2003
4. Common concerns amid diverse systems: health care experiences in five countries;Blendon;Health Affairs,2003