Singh, Vivek, Jagan Mohan, U Prasada Rao, David Heymann, and Lalit Dandona. “Validity of the Surveillance Quality Indicators - Timeliness and Completeness - in Surveillance Systems With Variable Data Quality”. Online Journal of Public Health Informatics 6, no. 1 (March 9, 2014). Accessed March 28, 2024. https://ojphi.org/ojs/index.php/ojphi/article/view/5203.