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Cov khoom pab First Aid

Nrhiav kev pabcuam thawj cov khoom siv thiab cov khoom lag luam ntawm no. Peb tabtom muab cov khoom siv pabcuam zoo ua ntej nrog cov nqi twv txiaj, thov so kom tau lossis muag cov khoom lag luam muag khoom muag ntawm no.