Received: 19 December 2017
Accepted: 2 January 2019
First Online: 11 January 2019
Ethics approval and consent to participate
: Ethical approval for the FGDs and interviews was granted by the Medical Ethics Committee of the University of Malaya Medical Centre, Kuala Lumpur, Malaysia (MEC reference numbers: 1052.1 and 1136.3); for the interviews, additional approval was given by the Research Ethics Committee at London School of Hygiene and Tropical Medicine, reference number 11512. All participants provided informed written consent.
: Not applicable.
: The authors declare that they have no competing interests.
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