HbA1c, fasting and 2 h plasma glucose in current, ex- and never-smokers: a meta-analysis - Soulimane, Soraya; Simon, Dominique; Herman, William; Lange, Celine; Lee, Crystal M. Y; Colagiuri, Stephen; Shaw, Jonathan E; Zimmet, Paul Z; Magliano, Dianna; Ferreira-Vivolo, Sandra Roberta Gouvea (Diabetologia, 2013)