Table 3.

Characteristics of the included Cochrane reviews.

	Intervention	Comparision	Number of RCTs	Participants
Wu et al., 2012 [14]	IVIG, thymosin, OTF, MPT, BCG, Lantigen B, TIAOJINING, Huangqi granules + baseline treatment	Baseline treatment	12	762
Yuan et al., 2008 [16]	Huangqi injection, Huangqi and red Chinese, Huangqi and Danggui + baseline treatment date	Baseline treatment	3	128

IVIG: intravenous immunoglobulin; OTF: oral transfer factor; MPT: mannan peptide tablet; BCG: Bacillus Calmette-Guerin (BCG) vaccine injection; and baseline treatment: STD prednisone.