This letter was published in The Lancet [© 2017 Lancet Publishing Group] and the definitive version is available at : http://doi.org/10.1016/S0140-6736(17)31445-9 The Journal's website is at: https://www.sciencedirect.com/science/article/pii/S0140673617314459?via%3Dihub Click to show full abstract
This letter was published in The Lancet [© 2017 Lancet Publishing Group] and the definitive version is available at : http://doi.org/10.1016/S0140-6736(17)31445-9 The Journal's website is at: https://www.sciencedirect.com/science/article/pii/S0140673617314459?via%3Dihub
               
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