1. Faculty of Nursing, Kilimanjaro Christian Medical University College, Moshi 2240, Tanzania
2. Department of Nursing, School of Health and Welfare, Jönköping University, SE-55111 Jönköping, Sweden
3. Department of Health Sciences, Swedish Red Cross University, SE-17176 Stockholm, Sweden
4. Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, SE-17177 Stockholm, Sweden
5. Cancer Surveillance Branch, International Agency for Research on Cancer, F-69372 Lyon, France
6. Department of Health Promotion, Sophiahemmet University, SE-114 86 Stockholm, Sweden
7. Department of Global Public Health, Karolinska Institutet, SE-17177 Stockholm, Sweden
8. Cancer Care Centre, Kilimanjaro Christian Medical Centre, Moshi P.O. Box 3010, Tanzania
9. Department of Material Sciences, Norwegian University of Technology and Science, NO-7491 Trondheim, Norway
10. Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi 2240, Tanzania
11. Management and Development for Health (MDH), Dar es Salaam P.O Box 79810, Tanzania
12. Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, SE-17176 Stockholm, Sweden