{{Cite journal| doi = 10.1007/s10995-018-02694-0| issn = 1092-7875, 1573-6628| volume = 23| issue = 6| pages = 777–786| last1 = Zombré| first1 = David| last2 = De Allegri| first2 = Manuela| last3 = Platt| first3 = Robert W.| last4 = Ridde| first4 = Valery| last5 = Zinszer| first5 = Kate| title = An Evaluation of Healthcare Use and Child Morbidity 4 Years After User Fee Removal in Rural Burkina Faso| journal = Maternal and Child Health Journal| access-date = 2019-07-10| date = 2019-06| url = http://link.springer.com/10.1007/s10995-018-02694-0}}