1 Division of Hospital Medicine, Department of Medicine, University of Michigan, Ann Arbor, MI, USA; Center for Indigenous Health Research, Tecpán, Guatemala; Research Center for the Prevention of Chronic Diseases, Institute of Nutrition of Central America and Panama, Guatemala City, Guatemala.
2 Department of Epidemiology and Biostatistics, School of Public Health, Makerere University, Kampala, Uganda.
3 Department of Public and Forensic Health Sciences and Medical Education, Faculty of Medicine, University of Porto, Porto, Portugal; EPI Unit, Institute of Public Health, University of Porto, Porto, Portugal; Faculty of Medicine, Eduardo Mondlane University, Mondlane, Mozambique.
4 Division of Infectious Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Medical Practice Evaluation Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
5 Institute of Applied Health Research, University of Birmingham, Birmingham B15 2TT, UK; Centre for Global Surgery, Department of Global Health, Stellenbosch University, Cape Town, South Africa; Medical Research Council/Wits University Rural Public Health and Health Transitions Research Unit Unit, Faculty of Health Sciences, School of Public Health, University of the Witwatersrand, Johannesburg, South Africa. Electronic address: j.davies.6@bham.ac.uk.