Reihe Working Papers in Health Policy and ManagementVictor Stephani × Effective and needed, but not used: Why do mobile phone-based health interventions in Africa not move beyond the project Victor StephaniUniversitätsverlag der TU BerlinTaschenbuch20199,00 € Does mHealth contribute to improved care for people with non-communicable diseases in developing countries?A systematic review of randomized controlled trialsVictor StephaniUniversitätsverlag der TU BerlinBuch2015