1 Centre for Global Health, Institute of Health and Society, University of Oslo, 0318 Oslo, Norway. Electronic address: christine.holst@medisin.uio.no.
2 Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
3 Basic Internet Foundation, Kjeller, Norway.
4 National Institute for Medical Research, Dar es Salaam and University of Dar es Salaam College of Health and Allied Sciences, Tanzania.
5 Department of Technology Systems, University of Oslo, 0318 Oslo, Norway; Basic Internet Foundation, Kjeller, Norway.
6 Centre for Global Health, Institute of Health and Society, University of Oslo, 0318 Oslo, Norway; Center for Global Health, Department of Neurology, Technical University of Munich, Germany.