Funding for this research was provided by:
Indian Council of Medical Research (66/12/SAC/NIREH/2018-NCD-II, dt. 04/11/2019)
Received: 17 October 2020
Accepted: 4 November 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: Ethics approval has been obtained from the Institutional (Human) Ethics Committee, National Institute for Research in Environmental Health (No: NIREH/BPL/IEC/2019–20/1494, dt. 06/01/2020). Written informed consent will be obtained from all participants and the sample forms have been appended (Appendix 3–5 in InternalRef removed).
: Not applicable as the manuscript is the protocol of a study and no personally identifiable information of the participants has been collected yet.
: The authors declare that they have no competing interests