Reappraisal of metformin efficacy in the treatment of type 2 diabetes: a meta-analysis of randomised controlled trials. oleh Rémy Boussageon, Irène Supper, Theodora Bejan-Angoulvant, Nadir Kellou, Michel Cucherat, Jean-Pierre Boissel, Behrouz Kassai, Alain Moreau, François Gueyffier, Catherine Cornu