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. Author manuscript; available in PMC: 2011 Oct 12.
Published in final edited form as: Cochrane Database Syst Rev. 2009 Oct 7;(4):CD006690. doi: 10.1002/14651858.CD006690.pub2
Reason for exclusion Quasi-randomised three-arm study comparing the effects of a Chinese herbal formula
(huang qi, huang jing, ge gen, zhe xie, chai hui, gui jian yu etc) in 66 people with
impaired glucose tolerance over 3 months. The report stated that the study was
randomised. Information obtained from phone interview indicated that allocation was
based on alternation. No blinding.