"States and territories established in 1948" . "Korean-speaking countries and territories" . "Republics" . "East Asian countries" . "COVID-19" . "Korea" . "Viral respiratory tract infections" . "Zoonoses" . "Toxicology treatments" . "Member states of the United Nations" . "Northeast Asian countries" . "1948 establishments in South Korea" . "Renal dialysis" . "Membrane technology" . "South Korea" . "Occupational safety and health" . "G20 nations" .