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Here.
I had a look. It turns out Cochrane does publish all their usable data, and they seem to be ungated! Here's a link to the data for this meta-analysis. (The link to this data is provided in the gated HTML article, but there doesn't seem to be a link from an ungated page, so I wonder if these data are supposed to be freely accessible... In any case, all their data are currently ungated and accessible by appending '/downloadstats' to the appropriate URL.)
Here are some details about the file formats: http://tech.cochrane.org/revman/documentation/file-formats
I find myself irritated that they only include effect sizes and sample sizes rather than the actual observed counts for each group, as that would make a Bayesian analysis much easier.