Authors’ contributions
CED, MP, MM
LHN conceptualised the study; SAN and SJL conceptualised the Bukhali trial; LHN, CED, MM, JM, TH, SK, MP and SN contributed to the design of the study methods, including the development of interview guides; JM and TH collected the data; MM led the data analysis, and CED, SK and MP provided guidance on analysis; CED drafted the first version of the manuscript; all authors commented on and edited the manuscript drafts and approved the final version.