Enlace original:
https://openknowledge.worldbank.org/handle/10986/5303
Naimoli, J. F.
,
Challa, S.
,
Schneidman, M.
,
Kostermans, K.
,
[ Toward a Grounded Theory of Why Some Immunization Programmes in Sub-Saharan Africa are More Successful Than Others : A Descriptive and Exploratory Assessment in Six Countries , Health Policy Plan ]