Byass, Peter
Hussain-Alkhateeb, Laith
D’Ambruoso, Lucia
Clark, Samuel
Davies, Justine
Fottrell, Edward
Bird, Jon
Kabudula, Chodziwadziwa
Tollman, Stephen
Kahn, Kathleen
Schiöler, Linus
Petzold, Max
Article History
Received: 11 December 2018
Accepted: 29 April 2019
First Online: 30 May 2019
Ethics approval and consent to participate
: All of the VA data used here come from secondary data sources that are in the public domain, so no specific ethical approval was necessary.
: Not applicable.
: The authors declare that they have no competing interests.
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