Effects of rosiglitazone and metformin on liver fat content, hepatic insulin resistance, insulin clearance, and gene expression in adipose tissue in patients with type 2 diabetes - Tiikkainen, M; Hakkinen, A M; Korsheninnikova, E; Nyman, T; Makimattila, S; Yki-Jarvinen, H (Diabetes, 2004)