<qa>  What is the use of corticosteroids allowed?- Participants who are currently receiving or have received systemic corticosteroids 2 weeks prior to starting study drug, or who have not fully recovered from side effects of such treatment. The following uses of corticosteroids are permitted: single doses, topical applications e.g., for rash, inhaled sprays e.g., for obstructive airways diseases, eye drops or local injections e.g., intra-articular. 