Response to the letter 'Impact of the free health care policies in Burkina Faso : underscoring important nuances' Aye, T. T. Nguyen, H. T. /Petitfour, Laurène /Ridde, Valéry Amberg, F. /Bonnet, Emmanuel Seynou, M. Kiendrébéogo, J. A. De Allegri, M. free health care policy health care service utilization facility-based delivery child health Burkina Faso 2025 text https://www.documentation.ird.fr/hor/fdi:010093356 fdi:010093356 Aye T. T., Nguyen H. T., Petitfour Laurène, Ridde Valéry, Amberg F., Bonnet Emmanuel, Seynou M., Kiendrébéogo J. A., De Allegri M.. Response to the letter 'Impact of the free health care policies in Burkina Faso : underscoring important nuances'. 2025, [Early access], [2 p.] EN BURKINA FASO