Informal payments for family planning: prevalence and perspectives of women, providers, and health sector key informants in western Kenya

K. Tumlinson,L. E. Britton,C. R. Williams,D. M. Wambua and D. O. Onyango. Informal payments for family planning: prevalence and perspectives of women, providers, and health sector key informants in western Kenya. Sexual and Reproductive Health Matters. 2021;29(1):10.1080/26410397.2021.1970958.