Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Save this search Download search results Subscribe to news feed Your filters: cql: author exact 6DBF357C-B25E-11E6-B104-2D2FD0AF0289 cql: author exact 2454EC82-F0EE-11E1-A9DE-61C894A0A6B4 Add to list Journal Article A1 Validity and reproducibility of an adolescent Web-based food frequency questionnaire Christophe Matthys (UGent) , Ilse Pynaert, Willem De Keyzer (UGent) and Stefaan De Henauw (UGent) (2007) JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION. 107(4). p.605-610 Add to list Conference Paper C3 An adolescent web-based food frequency questionnaire: validity and reproducibility Christophe Matthys (UGent) , Ilse Pynaert, Willem De Keyzer (UGent) and Stefaan De Henauw (UGent) (2006) Sixth international conference on dietary assessment methods : complementary advances in diet and physical activity assessment methodologies, Copenhagen, Denmark April 27-29, 2006 : program & abstracts.