Improving immunization rates at 18 months of age: implications for individual practices.
McElligott JT, Roberts JR, O'Brien ES, Freeland KD, Kolasa MS, Stevenson J, Darden PM. Improving immunization rates at 18 months of age: implications for individual practices. Public Health Rep. 2011 Jul-Aug; 126 Suppl 2:33-8.