It is important that each hazard is met with elimination or, on the minimum, a control measure to mitigate any potential threat. http://nguyenkhuyen-nuithanh.edu.vn/index.php?language=vi&nv=news&nvvithemever=d&nv_redirect=aHR0cHM6Ly93d3cubm9ydGh3ZXN0dS5lZHUvP1VSTD1odHRwczovL2NsYXB0b25wbHVtYmVyLmNvLnVr