What went wrong with care.data?

Failures in implementation of data sharing projects have eroded public trust. In the wake of NHS England’s decision to close down its care.data programme, Tjeerd-Pieter van Staa professor of health e-research at the University of Manchester, examines what lessons must be learnt, and what we can do better next time. Read the full analysis: http://www.bmj.com/content/354/bmj.i3636