Funding for this research was provided by:
University Grants Commission - Sri Lanka (2016/Mphil-PhD/029)
Received: 16 August 2019
Accepted: 16 December 2019
First Online: 7 January 2020
Ethics approval and consent to participate
: The ethics approval for this clinical trial was obtained from the research approval committee of the Faculty of Graduate Studies, University of Colombo, and the Ethics Review Committee of Institute of Indigenous Medicine, University of Colombo and ERC of Faculty of Medicine, Colombo, Sri Lanka. The trial was registered in ISRCTN registry (Trial number ISRCTN18149439 ExternalRef removed). The study is conducted adhering to GCP guidelines. Written informed consent will be obtained from each participant (Additional file InternalRef removed). The participants will be given sufficient time to ask questions and to consider whether they wish to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.