Sandro Gsteiger, PhD, Institute of Social and Preventive Medicine (ISPM), University of Bern, Bern, Switzerland, Janneke Heijne, PhD, National Institute for Public Health and the Environment, Bilthoven, The Netherlands, Patrick Chaulk, MD, Baltimore City Health Department, William Miller, MD, PhD, Department of Epidemiology, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, NC and Nicola Low, MD, Institute of Social and Preventive Medicine, University of Bern, Switzerland