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"mHealth is the use of mobile information and communication technologies for improving health. It can be used for a wide range of purposes, including health promotion and illness prevention, health care delivery, training and supervision, electronic payments, and information systems. Many believe that it has the potential to shift the paradigm on when, where, how and by whom health services are provided and accessed.
But mHealth is a young field and much of the evidence on "what works" is still emerging. Even the evidence that exists can sometimes be difficult to find."