Shah, R CShah, P R1994-04-012009-05-271994-04-012009-05-271994-04-01Shah RC, Shah PR. Knowledge, attitude and practice of maintenance of cold chain in immunization. Indian Pediatrics. 1994 Apr; 31(4): 454-7http://imsear.searo.who.int/handle/123456789/7579engEducation, Medical --standardsHealth PromotionHumansImmunizationIndiaPhysicians, Family --educationProfessional CompetenceVaccinesKnowledge, attitude and practice of maintenance of cold chain in immunization.Clinical Trial