1. Branch of Environment and Lifestyle Epidemiology International Agency for Research on Cancer (IARC) Lyon France
2. School of Public Health University of Health and Allied Sciences Hohoe Ghana
3. College of Medicine University of Malawi Blantyre Malawi
4. Kilimanjaro Clinical Research Institute Moshi Tanzania
5. Kilimanjaro Christian Medical Centre Moshi Tanzania
6. School of Public Heath Moi University Eldoret Kenya