supplementary material to a document supplementary material of a nutrition study Lachat C, Hawwash D, Ocké MC, Berg C, Forsum E, Hörnell A, Larsson C, Sonestedt E, Wirfält E, Åkesson A, Kolsteren P, Byrnes G, De Keyzer W, Van Camp J, Cade JE, Slimani N, Cevallos M, Egger M, Huybrechts I. Strengthening the Reporting of Observational Studies in Epidemiology-Nutritional Epidemiology (STROBE-nut): An Extension of the STROBE Statement. PLoS Med. 2016 Jun 7;13(6):e1002036. doi: 10.1371/journal.pmed.1002036. Supplementary material of a nutrition study that provides data collection tools and data as online material for dietary surveys or nutrition studies .