title: Commentary: Dietary diaries versus food frequency questionnaires-a case of undigestible data.
authors.affiliation: Department of Nutrition, Harvard School of Public Health, and the Channing Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
authors.forename: W
authors.initials: W
authors.lastname: Willett
mesh_terms: D015930:Diet Records; D004034:Diet Surveys; D002149:Energy Intake; D006801:Humans; D015203:Reproducibility of Results; D012107:Research Design; D011795:Surveys and Questionnaires