I'd say the risk is lower to moderate.
And knowing how meticulous Brad is about these things, he wouldn't be this far in on it if it was a "massive" risk.
If I recall people in the know said back in the summer that the outlook on this procedure was very good.
Its strange that people weren't pounding away at the apparent "enormity" of the risk until recent weeks. I think that's mainly people's fears pushing through.
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