TY - JOUR A1 - Gibson, D.G. A1 - Wosu, A.C. A1 - Pariyo, G.W. A1 - Ahmed, S. A1 - Ali, J. A1 - Labrique, A.B. A1 - Khan, I.A. A1 - Rutebemberwa, E. A1 - Flora, M.S. A1 - Hyder, A.A. T1 - Effect of airtime incentives on response and cooperation rates in non-communicable disease interactive voice response surveys: Randomised controlled trials in Bangladesh and Uganda Y1 - 2019 DO - 10.1136/bmjgh-2019-001604 VL - 4 IS - 5 ER -