Table 1

Key informants

Categories	Key informants	Examples	Expected number of interviews
Health policy	Policymakers	Ministry of health officials	2–4
Health practice	Clinicians	Healthcare professionals (doctors, nurses)	2–4
	Clinical guideline developers	UK National Institute for Health and Care Excellence	2–4
	Public health professionals, commissioners	National public health bodies	2–4
	Public/patients	Patient forums/groups	2–4
Health research	Researchers	Research institutes/universities Knowledge synthesis research groups Belgian Health Care Knowledge Centre Africa Evidence Network Student forums	2–4
Health research	Funding bodies	UK National Institute for Health Research European Union	2–4