Table 1.

Details of studies included in systematic review

Author	Country	Patients (n)	Study design	Age (range)	Study quality
CDC COVID-19 response team	USA	2572	Retrospective case series	0–18 years	Good
Garrazino, et al.	Italy	168	Cohort study	1–17 years	Good
Li, et al.	China	40	Retrospective cohort	16 days–14.2 years	Poor
Lu, et al.	China	171	Retrospective case series	1 day–15 years	Fair
Verdoni, et al	Italy	10	Case–control study	2.9–16 years	Fair
Whittaker, et al	England	58	Retrospective study	3 months–17 years	Fair
Li, et al	China	57	Retrospective study	0–5 years	Fair
Zhang, et al	China	46	Retrospective case series	0–18 years	Poor
Sun Dan, et al	China	36	Retrospective study	2–12 months	Fair
Oualha, et al	France	27	Retrospective study	2 months–17.8 years	Fair
Parri, et al	Italy	130	Retrospective study	0–18 years	Good
Wang, et al.	China	31	Retrospective case series	6 months–17 years	Fair
Wu, et al.	China	74	Retrospective case series	1 month–15 years	Good
Xia Wei, et al	China	13	Retrospective case series	0–18 years	Fair
Parri, et al	Italy	100	Cohort study	0–17.5 years	Fair
Bai, et al	China	25	Retrospective case series	0.6–17.0 years	Fair
Miller, et al	USA	44	Retrospective case series	7 months–18 years	Good
Yu pin Tan, et al	China	10	Retrospective case series	2–12 years	Poor
Qiu, et al	China	27	Retrospective case series	0–18 years	Fair
Ma Huijing, et al	China	50	Retrospective case series	0–16 years	Fair
Dan Sun, et al	China	10	Retrospective case series	0–18 years	Poor