Funding for this research was provided by:
Innovative Medicine Initiative (115372)
Received: 10 October 2017
Accepted: 8 June 2018
First Online: 6 July 2018
Ethics approval and consent to participate
: Written informed consent was obtained from all participants before inclusion in the study. The medical ethics committee at each site approved the study (Additional fileInternalRef removed: Table S4).
: The authors declare that they have no competing interests.
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