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Co-prescription network in the high-dose RCEG group. RCEG, namely Huang-Lian, was plotted in the center of the CHM network as the core prescription for type 2 diabetes in this diagram. The size of a circle is proportional to the prescription frequency of each CHM. The thickness of a connection line between two CHM corresponds to the prevalence of that combination. RCEG, Rhizoma Coptidis extract granules; CHM, Chinese herbal medicines.
