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Article History

Received: 25 February 2020

Accepted: 29 July 2020

First Online: 12 August 2020

Ethics approval and consent to participate

: The study was approved by the Mongolian Ministry of Health research ethics committee (Ref: 18) and the London School of Hygiene and Tropical Medicine (Ref: 13882).All participants (and parent or guardian in the case of children under 18) were provided written information about the research and gave written informed consent to participate, as well as having anonymised data published and shared for the purposes of research. Patients who chose not to participate in the e-registry were also invited to complete an optional anonymous feedback form to explain their reasoning, and this was deemed acceptable by both ethics committees above.

: Written informed consent for publication of individual persons anonymised data was obtained from each participant (and from their parent or guardian in the chase of children under 18) alongside consent to participate in the e-registry.

: The authors declare that they have no competing interests.