Bahl, R Effect of vitamin A administered at Expanded Program on Immunization contacts on antibody response to oral polio vaccine. [electronic resource] - European journal of clinical nutrition Apr 2002 - 321-5 p. digital Publication Type: Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0954-3007 Standard No.: 10.1038/sj.ejcn.1601325 doi Subjects--Topical Terms: AdultAntibody Formation--drug effectsDietary SupplementsDouble-Blind MethodFemaleHumansIndiaInfantMalePoliovirus Vaccine, Oral--bloodPostpartum Period--physiologyPoverty AreasUrban PopulationVitamin A--administration & dosageVitamin A Deficiency--prevention & control