Table 3.

Adverse events for all patients in included RCTs

Author/reference	Facial asymmetry			Edema/hematoma at injection area
	Exposed	Control	Disappearance	Exposed	Control	Disappearance
Zhang et al. [24]	3	0	6 weeks	2	0	5 days
Shehata et al. [26]	4	0	not reported	1	2	not reported
Wu et al [23]	5	0	7 weeks	2	1	7 days
Zúñiga et al [25]	2	0	not reported	2	0	not reported