Intervention-related bias in reporting of food intake by fifth-grade children participating in an obesity prevention study
Harnack L, Anliker JA, Himes J, Ring K, Jobe J, Thompson J, Weber JL, Snyder P, Gittelsohn J, Clay T. Intervention-related bias in reporting of food intake by fifth-grade children participating in an obesity prevention study. Am J Epidem. 2004; 160(11):1117-1121.