Funding for this research was provided by:
National Institute for Health Research
Text and Data Mining valid from 2018-10-03
Received: 31 May 2018
Accepted: 24 September 2018
First Online: 3 October 2018
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: The participants gave written consent based on written and oral information. The study was approved by the Health Research Authority NHS Research Ethics Committee (Reference: 16/WA/0241) as well as the London School of Hygiene & Tropical Medicine ethics committee (Reference: 11628).
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