@misc{indiciaecab705f43edc, title = {Human immunization in developing countries: practical and theoretical problems and prospects.}, author = {S C Arya}, year = {1994}, doi = {10.1016/0264-410x(94)90152-x}, url = {https://pubmed.ncbi.nlm.nih.gov/7887021/}, note = {Source identifier: 7887021} }