@misc{indiciaea23d2887aaa5, title = {Introducing new vaccines into developing countries: obstacles, opportunities and complexities.}, author = {John Clemens and Luis Jodar}, year = {2005}, doi = {10.1038/nm1225}, url = {https://pubmed.ncbi.nlm.nih.gov/15812482/}, note = {Source identifier: 15812482} }