question: What happens in very severe cases of asthma ?
answer: intravenous corticosteroids , magnesium sulfate , and hospitalization may be required
turker_answer: In very severe cases of asthma intravenous corticosteroids , magnesium sulfate , and hospitalization may be required .
rule-based: Intravenous corticosteroids , magnesium sulfate , and hospitalization may be required happens in very severe cases of asthma .