Synergistic Effect of a Flavonoid-Rich Cocoa-Carob Blend and Metformin in Preserving Pancreatic Beta Cells in Zucker Diabetic Fatty Rats. - Gallardo-Villanueva P; Fernández-Marcelo T; Villamayor L; Valverde AM; Ramos S; Fernández-Millán E; Martín MA (Nutrients, 2024)