1. Nabarun Dasgupta is with the Injury Prevention Research Center and the Eshelman School of Pharmacy, University of North Carolina, Chapel Hill. Leo Beletsky is with the School of Law and the Bouvé College of Health Sciences, Northeastern University, Boston, MA and is also with the University of California, San Diego School of Medicine, La Jolla. Daniel Ciccarone is with the Department of Family and Community Medicine, University of California, San Francisco.