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Pratt (michael.pratt@emory.edu) is with the Hubert Dept of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA. Ramirez and Martins are students with the Post-graduate program in Epidemiology, Universidade Federal de Pelotas, Brazil. Bauman is with the Sydney School of Public Health, University of Sydney, Australia. Heath is with the University of Tennessee College of Medicine Chattanooga. Kohl is with the Dept of Kinesiology and Health Education, Michael and Susan Dell Center for Healthy Living, University of Texas at Austin. Lee is with the School of Medicine, Harvard Medical School, and the Harvard T.H. Chan School of Public Health, Brigham and Women’s Hospital, Boston, MA. Powell is with the Division of Public Health, Georgia Dept of Human Resources, Atlanta, GA. Hallal is with the Post-graduate program in Epidemiology, Universidade Federal de Pelotas, Brazil.