Pragmatism versus purity: effectiveness of the key informant methodology in a developing rural setting.
Williams
C
C
Sparrow
J M
JM
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