Effect of metformin on serum lipoprotein lipase mass levels and LDL particle size in type 2 diabetes mellitus patients - Ohira, M; Miyashita, Y; Ebisuno, M; Saiki, A; Endo, K; Koide, N; Oyama, T; Murano, T; Watanabe, H; Shirai, K (Diabetes Res Clin Pract, 2007)