Professor of Medicine, University of Calgary

Boston University School of Public Health, Department of Global Health

Public Health Epidemiologist, Researcher at Tigray Health Research Institute

Universidad Internacional del Ecuador

Full Professor Clinical Pathology, Universidade Federal de Minas Gerais

Research Fellow, Durban University of Technology

Assistant Professor,Researcher, PhD candidate at University of South Australia

Department of Adult Health, University of Cape Coast

Centro de Estudios Demográficos, Urbanos y Ambientales; El Colegio de México

Associate Professor