The Authors Respond

Affiliation

• ¹ Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, clesko2@jhu.edu Department of Pharmacy Practice, College of Pharmacy, University of Rhode Island, Kingston, RI Department of Epidemiology, University of North Carolina, Chapel Hill, NC Department of Biostatistics, University of North Carolina, Chapel Hill, NC Department of Epidemiology, University of North Carolina, Chapel Hill, NC.