Diet, physical activity or both for prevention or delay of type 2 diabetes mellitus and its associated complications in people at increased risk of developing type 2 diabetes mellitus - Hemmingsen, B. (Herlev University Hospital. Department of Internal Medicine) ; Gimenez-Perez, Gabriel (Hospital General de Granollers) ; Mauricio Puente, Dídac (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Roqué i Figuls, M. (Institut d'Investigació Biomèdica Sant Pau) ; Metzendorf, M. I. (Institute of General Practice. Medical Faculty of the Heinrich-Heine-University Düsseldorf) ; Richter, B. (Institute of General Practice. Medical Faculty of the Heinrich-Heine-University Düsseldorf) ; Universitat Autònoma de Barcelona