Lau, Eric H.Y., Qiqi Zhang, Kin On Kwok, Irene O. Wong, Dennis K. Ip, and Benjamin J. Cowling. “Using Health-Seeking Pattern to Estimate Disease Burden from Sentinel Surveillance”. Online Journal of Public Health Informatics 8, no. 1 (March 24, 2016). Accessed January 27, 2023. https://www.ojphi.org/ojs/index.php/ojphi/article/view/6478.