Raising Awareness Among Immunization Programme Managers to the Potential Bias Resulting from the Application of Fixed Factors to Obtain Target Population Size Estimates January 1, 2012 Journal articles DOWNLOAD ARTICLE (ENGLISH) DOWNLOAD ARTICLE (FRENCH) Join our community Close Receive the latest updates from the UNICEF Data team Don’t miss out on our latest data Get insights based on your interests First name Last name Email address Sign up and download Error subscribing