'COVER' (cover of vaccination evaluated rapidly): 20.
White
J M
JM
Hobday
S J
SJ
Begg
N T
NT
D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D017589:Immunization Programs; D007223:Infant; D008297:Male; D014611:Vaccination / Q000706:statistics & numerical data*; D014852:Wales / Q000453:epidemiology