Blood glucose and risk of incident and fatal cancer in the metabolic syndrome and cancer project (me-can): analysis of six prospective cohorts - Stocks, T; Rapp, K; Bjorge, T; Manjer, J; Ulmer, H; Selmer, R; Lukanova, A; Johansen, D; Concin, H; Tretli, S; Hallmans, G; Jonsson, H; Stattin, P (PLoS Med, 2009)