@article{Lee2019,
author = {Lee, A. and Blencowe, H. and Lawn, J.E.},
title= {Small babies, big numbers: Global estimates of preterm birth},
year = {2019},
doi = {10.1016/S2214-109X(18)30484-4},
volume = {7},
number = {1},
pages = {2--3},
}