The Editors

Brian L. Strom is Chancellor, Rutgers Biomedical and Health Sciences and Executive Vice President for Health Affairs, Rutgers University, Newark, NJ, USA.

Stephen E. Kimmel is Professor of Medicine and Director of the Division of Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.

Sean Hennessy is Professor of Epidemiology and Director of the Center for Pharmacoepidemiology Research and Training, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.