1. Reducing the global burden of preterm births
Bellington Vwalika, Joan T Price, Alan Rosenbaum, Jeffrey S A Stringer 
The Lancet Global Health 
Volume 7, Issue 4, (April 2019)
DOI: /S X(19)
Copyright © 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license Terms and Conditions

2. Figure
Estimated gestational age at delivery among singletons in 13 public sector sites in Lusaka, Zambia (February, 2006–December, 2012)
The Lancet Global Health 2019 7, DOI: ( /S X(19) )
Copyright © 2019 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY-NC-ND 4.0 license Terms and Conditions