Immigrant families' perceptions on walking to school and school breakfast: a focus group study

by Busby Katie, Liu Lenna, Lozano Paula, Greves H Mollie, Cole Jen, Johnston Brian
Published 2007-12-01

Evaluating geographic imputation approaches for zip code level data: an application to a study of pediatric diabetes

by Puett Robin C, Porter Dwayne E, Lawson Andrew, Liese Angela D, Hibbert James D, Standiford Debra, Liu Lenna, Dabelea Dana
Published 2009-10-01