Table 3.

Quality assessment of clinical trials using Cochrane Collaboration's risk of bias tool.

Study	Adequate sequence generation	Allocation concealment	Blinding of participants and personnel	Blinding of outcome assessment	Incomplete outcome data	Selective outcome reporting	Free of other bias	Net risk
Ojima et al. (24)	High risk	Unclear risk	High risk	Unclear risk	Low risk	High risk	High risk	High risk