Vaccine
Volume 36, Issue 45  Pages 6579-6894 (29 October 2018)
https://www.sciencedirect.com/journal/vaccine/vol/36/issue/45

Research article   Open access
Challenges to sustainable immunization systems in Gavi transitioning countries
Tania Cernuschi, Stephanie Gaglione, Fiammetta Bozzani
Pages 6858-6866