Table 2. Quality evaluation results of guidelines (n=2).

Authors	Standardized scores by field (%)						Number of fields ≥60%	Number of fields ≥30%	Overall quality
	Scope and purpose	Participants	Preciseness	Clarity	Applicability	Independence
Wang et al. (18)	100	100	92	100	95	100	6	6	A
Ren et al. (19)	100	100	88	100	85	100	6	6	A