Thaum xaiv lub tshuab ntim blister, peb yuav tsum xav txog cov hauv qab no:
Kev Xav Tau Ntau Lawm: Raws li lub tuam txhab cov kev xav tau ntau lawm, xws li cov khoom tsim tawm, ntim cov duab, thiab cov khoom siv, xaiv lub tshuab ntim ntim tshuab qauv thiab cov lus qhia tshwj xeeb uas ua tau raws li cov kev xav tau.
Cov Khoom Siv Ua Haujlwm: Thaum ua tau raws li cov kev xav tau ntau lawm, muab qhov tseem ceeb rau cov tshuab ntim khoom ntim uas ruaj khov, ua haujlwm tau zoo, thiab tswj tau yooj yim.