{{Cite journal| doi = 10.1016/j.jval.2019.10.007| issn = 10983015| volume = 23| issue = 3| pages = 300–308| last1 = Nguyen| first1 = Hoa Thi| last2 = Torbica| first2 = Aleksandra| last3 = Brenner| first3 = Stephan| last4 = Kiendrébéogo| first4 = Joël Arthur| last5 = Tapsoba| first5 = Ludovic| last6 = Ridde| first6 = Valéry| last7 = De Allegri| first7 = Manuela| title = Economic Evaluation of User-Fee Exemption Policies for Maternal Healthcare in Burkina Faso: Evidence From a Cost-Effectiveness Analysis| journal = Value in Health| access-date = 2020-03-18| date = 2020-03| url = https://linkinghub.elsevier.com/retrieve/pii/S1098301519351794}}