Field validation of secondary commercial data sources on the retail food outlet environment in the U.S.

Authors: Lisa M. Powell, Euna Han, Shannon N. Zenk, Tamkeen Khan, Christopher M. Quinn, Kevin P. Gibbs, Oksana Pugach, Dianne C. Barker, Elissa A. Resnick, Jaana Myllyluoma, Frank J. Chaloupka - Health & Place 2011 cited by 152