The EPIC-Norfolk Study
Validity of a short questionnaire to assess physical activity in 10 European countries.
Peters T, Brage S, Westgate K, Franks PW, Gradmark A, Tormo Diaz MJ, Huerta JM, Bendinelli B, Vigl M, Boeing H, Wendel-Vos W, Spijkerman A, Benjaminsen-Borch K, Valanou E, de Lauzon Guillain B, Clavel-Chapelon F, Sharp SJ, Kerrison N, Langenberg C, Arriola L, Barricarte A, Gonzales C, Grioni S, Kaaks R, Key T, Khaw KT, May A, Nilsson P, Norat T, Overvad K, Palli D, Panico S, Ramón Quirós J, Ricceri F, Sánchez MJ, Slimani N, Tjonneland A, Tumino R, Feskins E, Riboli E, Ekelund U, and Wareham NJ
European Journal of Epidemiology. Aug 2011
(DOI : 10.1007/s10654-011-9625-y)