College of Anesthesia & Sri Lanka College of Pulmonologists
https://drive.google.com/file/d/1KXmXzJ2NQ0rotgi0JTpv8BWKj47E2mjE/view?usp=sharing
Primary Care Physicians of Sri Lanka
https://drive.google.com/file/d/1ph63XbhcSi0yd3sWdmM3Q67oxNDv64XW/view?usp=sharing
Laboratory Testing Ministry of health (2021 June 09) Link