Chong C-F. Dividing the Emergency Department into Red, Yellow, and Green Zones to Control COVID-19 Infection; a Letter to Editor. Arch Acad Emerg Med [Internet]. 2020 Jun. 2 [cited 2024 Apr. 19];8(1):e60. Available from: https://journals.sbmu.ac.ir/aaem/index.php/AAEM/article/view/771