Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	667 people 2 RCTs in this analysis	Adverse effects 42/330 (12.7%) with antivirals 45/337 (13.4%) with corticosteroids	RR 0.96 95% CI 0.65 to 1.14 P = 0.82		Not significant