Figure. Study Flowchart Illustrating Randomization, Treatment, Follow-up, and Data Analysis of the Study Participants.

PP indicates per protocol; ITT, intention to treat. Note that the efficacy evaluation was conducted in the PP analysis group, which included 30 participants (16 in the propranolol group and 14 in the steroid group). The safety evaluation was conducted in the safety population, which included 33 participants (17 in the propranolol group and 16 in the steroid group).

^aNumber of patients not available.