BibTex format
@article{Stewart:1982:10.1016/s0140-6736(82)91858-x,
author = {Stewart, GT},
doi = {10.1016/s0140-6736(82)91858-x},
journal = {Lancet},
title = {Age-specific immunisation schedules.},
url = {http://dx.doi.org/10.1016/s0140-6736(82)91858-x},
volume = {1},
year = {1982}
}