Improving Effective Coverage in Health do financial incentives work? - de Walque, Damien; Friedman, Jed; Kandpal, Eeshani; Neelsen, Sven; Piatti-Funfkirchen, Moritz; Sautmann, Anja; Shapira, Gil; Van de Poel, Ellen; Wagstaff, Adam (Policy research report, 2022)