Soh, Annabel Chien Ying, Anurag Sharma, and David John Muscatello. “Impact of Seasonal Influenza on Polyclinic Attendances for Upper Respiratory Tract Infections in Singapore”. Western Pacific Surveillance and Response 11, no. 2 (June 30, 2020). Accessed May 5, 2024. https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/702.