1. Global Health Working Group, Institute for Medical Epidemiology, Biometrics and Informatics, Martin-Luther-University Halle-Wittenberg , Halle (Saale) , Germany
2. Department of Preventive Medicine, School of Public Health, Addis Ababa University , Addis Ababa , Ethiopia
3. NCD Working Group, School of Public Health, Addis Ababa University , Addis Ababa , Ethiopia
4. Kilimanjaro Christian Medical Centre , Moshi , Tanzania
5. Kilimanjaro Clinical Research Institute, Kilimanjaro Christian Medical Centre and Kilimanjaro Christian Medical University College , Moshi , Tanzania
6. Department of Gynaecology, Martin-Luther-University Halle-Wittenberg , Halle (Saale) , Germany