Table 3. Quality assessment of case series .

Study	Clear inclusion criteria	Standard way of measurement condition	Valid method of identification	Consecutive inclusion	Complete inclusion	Demographics reporting	Clinical reporting	Follow-up/outcomes reporting	Presenting site demographics reporting	Appropriate analysis
Yu, 201911	Yes	Yes	Unclear	Yes	Unclear	No	Unclear	Yes	No	NA
Leduc, 201719	Yes	Yes	Yes	Yes	Unclear	Unclear	Yes	Yes	Yes	Yes
Kupsky, 201612	Yes	Yes	Yes	Yes	Yes	Unclear	Yes	Yes	Yes	Yes
Look Hong, 201210	Yes	Yes	Yes	Yes	Unclear	Yes	Yes	Yes	Yes	NA
Ge, 201118	No	Yes	Yes	Yes	No	Unclear	Yes	Yes	Yes	NA

Abbreviations: NA, not applicable.