Richard S Cooper1
, Katharina Wolf-Maier1
, Amy Luke1
, Adebowale Adeyemo2
, José R Banegas3
, Terrence Forrester4
, Simona Giampaoli5
, Michel Joffres6
, Mika Kastarinen7
, Paola Primatesta8
, Birgitta Stegmayr9
and Michael Thamm10 
1
Department of Preventive Medicine and Epidemiology, Loyola University Stritch School of Medicine, Maywood, IL, USA
2
Department of Pediatrics, University College Hospital, Ibadan, Nigeria
3
Departamento de Medicina Preventiva y Salud Pública, Facultad de Medicina. Universidad Autónoma de Madrid, Spain
4
Tropical Medicine Research Institute, University of the West Indies, Kingston, Jamaica
5
Istituto Superiore di Sanità, Laboratorio di Epidemiologia e Biostatistica, Rome, Italy
6
Department of Community Health and Epidemiology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
7
Department of Public Health and General Practice, University of Kuopio, Finland
8
Department of Epidemiology and Public Health, University College London Medical School, London, UK
9
Department of Medicine, University Hospital, Umeå, Sweden
10
Robert-Koch Institut, Berlin, Germany