TY  - RPRT
TI  - Immunization in the developing world: strategic challenges.
AU  - D J Nokes
AU  - F T Cutts
DO  - 10.1016/0035-9203(93)90001-7
UR  - https://pubmed.ncbi.nlm.nih.gov/8249056/
ID  - 8249056
ER  -