1Amresh D, Hanchate, Arlene S, Ash, Julie A, Gazmararian, Michael S, Wolf, Michael K, Paasche -Orlow. The Demographic Assessment for Health Literacy (DAHL) : a new tool for estimating associations between health literacy and outcomes in national surveys [J] . Journal of general internal medicine, 2008, 23 (10) : 1561 -6.