title: Pragmatism versus purity: effectiveness of the key informant methodology in a developing rural setting.
authors.forename: C
authors.initials: C
authors.lastname: Williams
authors.forename: J M
authors.initials: JM
authors.lastname: Sparrow
mesh_terms: D001766:Blindness / Q000175:diagnosis* / Q000453:epidemiology / Q000517:prevention & control; D002648:Child; D002675:Child, Preschool; D003625:Data Collection / Q000379:methods*; D003906:Developing Countries; D005260:Female; D006306:Health Surveys; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012423:Rural Health