Middleton, P.2008-05-022008-05-022004Zhongguo Xunzheng Yixue Zazhi, 2004; 4(11):711-7131672-2531http://hdl.handle.net/2440/43140Copyright Beijing Wanfang Data CoenHow Allocation Concealment Is Handled in Cochrane ReviewsJournal article00200771282008050216435444452Middleton, P. [0000-0002-8573-338X]