Chronic disease care integration into primary care services in sub-Saharan Africa: a 'best fit' framework synthesis and new conceptual model.

Objective: To examine the relevance of existing chronic care models to the integration of chronic disease care into primary care services in sub-Saharan Africa and determine whether additional context-specific model elements should be considered.

Design: 'Best fit' framework synthesis comprising two systematic reviews. First systematic review of existing chronic care conceptual models with construction of a priori framework.