WASET
    M. Izzat Md. Nor and  N. Jaffar and  N. Zaitulakma Md. Zain and  N. Izyanti Mohd Suppian and  S. Balakrishnan and  G. Kandavello,  Positivity Rate of Person under Surveillance among Institut Jantung Negara’s Patients with Various COVID-19 Vaccination Status in the First Quarter of 2022, Malaysia.   journal   = {International Journal of Health and Medical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2023, vol. 204(12). 313 - 317
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013396.