1 Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, Md; Center for Global Non-Communicable Diseases, Johns Hopkins University, Baltimore, Md.
2 Division of Pulmonary and Critical Care, School of Medicine, Johns Hopkins University, Baltimore, Md; Center for Global Non-Communicable Diseases, Johns Hopkins University, Baltimore, Md; Program in Global Disease Epidemiology and Control, Department of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Md. Electronic address: wcheckl1@jhmi.edu.