Funding for this research was provided by:
National Institute for Health Research (16/136/87)
Received: 26 October 2018
Accepted: 12 April 2019
First Online: 30 May 2019
Ethics approval and consent to participate
: The NIHR Global Health Research Unit on Improving Health in Slums has been granted full ethical approval by the University of Warwick Biomedical and Scientific Research Ethics Sub-Committee (REGO-2017-2043 AM01), the Ministry of Health, Lagos State Government (LSMH/2695/11/259) the Ministry of Health, Oyo State Government (ADB/479/657), Amref Health Africa (AMREF-ESRC P440/2018), the National Bioethics Committee Pakistan (4-87/NBC-298/18/RDC3530), and the Bangladesh Medical Research Council. Written consent will be obtained from all research participants.
: Not applicable
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.