Vashishtha, Vipin MKalra, Ajay2009-02-272009-05-272009-02-272009-05-272009-02-27Vashishtha VM, Kalra A. Reply. Indian Pediatrics. 2009 Feb; 46(2): 185-6http://imsear.searo.who.int/handle/123456789/12514engChildHumanImmunization ProgramsIndiaPoliomyelitisSatiety ResponseVaccinationJournal Article