Article History
Received: 17 January 2018
Accepted: 10 December 2018
First Online: 29 December 2018
Ethics approval and consent to participate
: Ethics approval was sought and granted from University Research Ethics Committee of the University of Dundee and the Blantyre District Health Office. All participants were provided with an information sheet before signing a consent form.
: All participants consented to their views being published anonymously.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.