title: Assessment of diet and physical activity: new tools; old challenges.
authors.forename: Agneta
authors.initials: A
authors.lastname: Yngve
authors.forename: Marilyn
authors.initials: M
authors.lastname: Tseng
authors.forename: Allison
authors.initials: A
authors.lastname: Hodge
authors.forename: Geraldine
authors.initials: G
authors.lastname: McNeill
authors.forename: Irja
authors.initials: I
authors.lastname: Haapala
mesh_terms: D034201:Computers, Handheld; D004032:Diet; D005515:Food Labeling / Q000379:methods; D009043:Motor Activity; D015596:Nutrition Assessment; D009753:Nutritive Value; D009765:Obesity / Q000517:prevention & control; D010506:Periodicals as Topic; D015203:Reproducibility of Results