. Author manuscript; available in PMC: 2019 May 22.
Published in final edited form as: Lancet Glob Health. 2017 Sep 21;5(11):e1152–e1160. doi: 10.1016/S2214-109X(17)30366-2
Published by Elsevier Ltd.This is an Open Access article under the CC BY 4.0 license.