Manahan KMS, De Guzman AR, Segarra AB, Sucaldito MN, Martinez REC. Establishing an early warning surveillance system in jails in Calabarzon, the Philippines, 2021. Western Pac Surveill Response J [Internet]. 2024 Jun. 28 [cited 2024 Nov. 21];15(2):7. Available from: https://ojs.wpro.who.int/ojs/index.php/wpsar/article/view/1083