Updates are available Correction dated 2020-01-13

Article History

Received: 2 November 2018

Accepted: 10 June 2019

First Online: 8 July 2019

Change Date: 13 January 2020

Change Type: Correction

Change Details: It was highlighted that in the original article [1] the selection process was not described clearly enough to avoid confusion under the heading of the Target of Outcomes in the Methods section.

Ethics approval and consent to participate

: The study protocol was approved by the Ethics Review Committee of Sri Lanka Medical Association and the Ethics Committee of the National Centre for Global Health and Medicine, Japan. Written informed consent was obtained from the adults who agreed to participate in the study. We obtained informed verbal consent from all participants of youth clubs who participated in this study. In the event of children below 18 years who were members of a youth club, additional verbal consent was sought from their parents or guardians. Since we did not collect individual information from youth club members, the Ethics Board approved that we received simply verbal consent from their youth and parents when required. The study was registered in the Sri Lanka Clinical Trials Registry (SLCTR/2017/002). Registered on 19th January 2017, ExternalRef removed, Date of enrolment of the first participant to the trial was 1st February 2017.

: Not applicable.

: The authors declare that they have no competing interests.