National immunisation coverage: need for surveillance.
Nair
K P B
KP
D003140:Communicable Disease Control; D006801:Humans; D017589:Immunization Programs / Q000458:organization & administration*; D007194:India; D009313:National Health Programs / Q000458:organization & administration; D020380:Needs Assessment; D015397:Program Evaluation; D018570:Risk Assessment; D012424:Rural Population