Tsitsaninso Oxygen System
Zogulitsa zomwe zimakwaniritsa zosowa zaumoyo wa anthu. Malinga ndi WHO, mankhwalawa amayenera kupezeka “nthawi zonse, pamlingo wokwanira m’mafomu oyenerera a mlingo, ndi mfundo zotsimikizirika komanso zolondola, komanso pamtengo womwe munthu ndi anthu ammudzi angakwanitse”.
