Ketwang, Wipawee. 2026. “Using surveillance system evaluation to develop an influenza surveillance system for strengthened disease prevention and control at Bang Pahan Hospital, Phra Nakhon Si Ayutthaya Province”. Journal of Medical and Public Health Region 4 16 (2). Saraburi,Thailand. https://he01.tci-thaijo.org/index.php/JMPH4/article/view/286397.