7Liu JP, Zhang M, Wang W, et al. Chinese herbal medicines fortype 2 diabetes mellitus[J]. Cochrane Database of Syst Rev, 2004, (3): CD003642.
8Moher D, Liberati A, Tetzlaff J, et al. Preferred reporting items for systematic reviews and meta-analyses: the PRISMAstatement[J]. PLoS Med, 2009,6(7): e10OO097.
9Alderson P, Green S, Higgins J. Cochrane Reviewer's Handbook 4.2.2[updated December 2003][M/OL].[2004-03-20].http://www. cocbrane. org/resources/handbook/hbook, htm.
10Jadad AR, Moore RA, Carroll D. Assessing the quality of reports of randomized clinical trials : is blinding necessary?[J]. Controll Clin Trials, 1996,17(1): 1-12.
