India / Humans / Child / Indian / Vaccination / Poliomyelitis / Odds ratio / Confidence Limit / Case Control Studies / Child preschool / Poliomyelitis / Odds ratio / Confidence Limit / Case Control Studies / Child preschool
Forecasting / Humans / Child / Infant / Vaccination / Poliomyelitis / Public health systems and services research / Poliovirus / Child preschool / Poliomyelitis / Public health systems and services research / Poliovirus / Child preschool