Funding for this research was provided by:
Horizon 2020 Framework Programme (643774)
Received: 5 May 2021
Accepted: 6 November 2021
First Online: 18 December 2021
: Ethical approval was obtained from the Institutional Review Board in each participating country and at each research location before the start of the study. Information sheets and consent forms were made available in the major South Asian languages. Multilingual translators were available as required. Each participant provided informed consent, which was obtained by the study research assistants and research nurses, under the supervision of the local principal investigator. People unwilling or unable to provide consent were excluded from the study.<i>India</i>• Max Healthcare Institutional Ethic Committee (ref: CT/MSSH/SKT-2/ENDO/IEC/14-40, date 22/04/16)• Indian Council for Medical Research (ICMR, ref: 55/7/Indo-Foreign-Diab/2014-NCD-II, date 08/02/2016)<i>Pakistan</i>• Punjab Institute of Cardiology Ethical Committee (ref: rtpgme-research-047, date 09/04/16)• Services Institute of Medical Sciences Institutional Review Board (ref: IRB/2016/222/SIMS, date 12/03/16)<i>Sri Lanka</i>• University of Colombo Ethics Review Committee (ref: EC-16-063, date 23/05/16)• University of Kelaniya Ethics Review Committee (ref: P/62/05/2016, date 11/05/16)<i>UK</i>• West Midlands - Solihull Research Ethics Committee (ref: 16/WM/0171, date 14/04/2016)
: The authors declare that they have no competing interests.