Ключевые слова: air, ambulance, backup, breath, breathing, clinical, concentrator, condition, coronavirus, covid, covid19, damage, deficiency, disease, emergency, equipment, face, failure, gas, health, heavy, hospital, humidifier, insufficiency, life, line, lung, mask, medical, medicine, oxygen, patients, plastic, pneumonia, pulmonary, recovery, respiratory, room, route, sarscov2, save, severe, support, therapy, threat, treatment, tube, ventilation, viral,