RT Journal Article SR Electronic T1 (Mis)measurement in the study of food environment: we need better methods to solve the puzzle JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 817 OP 818 DO 10.1136/jech-2014-205163 VO 69 IS 8 A1 Joe Brew YR 2015 UL http://jech.bmj.com/content/69/8/817.1.abstract AB