1. Harvard T.H. Chan School of Public Health; Biostatistics Department; Boston U.S.A.
2. University of Bordeaux; ISPED, F-33000 Bordeaux France
3. INSERM, U1219 Bordeaux Population Health Research Centre; F-33000, Bordeaux France
4. INRIA (SISTM) Centre Recherche Bordeaux Sud-Ouest; University of Bordeaux; Talence France
5. Oslo Center for Biostatistics and Epidemiology; Oslo University Hospital and University of Oslo; Norway
6. Division of Infectious Diseases and Hospital Epidemiology; University Hospital of Zurich; Switzerland
7. Basel Institute for Clinical Epidemiology and Biostatistics; University Hospital of Basel; Switzerland
8. Department of Infectious Diseases Bern University Hospital; University of Bern; Switzerland