{{Cite journal| doi = 10.1186/s13561-020-00293-w| issn = 2191-1991| volume = 10| issue = 1| pages = 36| last1 = Beaugé| first1 = Yvonne| last2 = Ridde| first2 = Valery| last3 = Bonnet| first3 = Emmanuel| last4 = Souleymane| first4 = Sidibé| last5 = Kuunibe| first5 = Naasegnibe| last6 = De Allegri| first6 = Manuela| title = Factors related to excessive out-of-pocket expenditures among the ultra-poor after discontinuity of PBF: a cross-sectional study in Burkina Faso| journal = Health Economics Review| access-date = 2020-11-20| date = 2020-11-14| url = https://healtheconomicsreview.biomedcentral.com/articles/10.1186/s13561-020-00293-w}}