Barnes was treated for atrial fibrillation in 2009, but needed another trip to London to see his cardiologist mid-tournament after his heart began racing during Wales' pool win over Australia at Lyon.
The Wallabies will be aiming to get off to a quick start when they face Fiji in their World Cup opener. But there are five key areas they must get right.
The Lions held off the Mooloos, who led by two points at halftime, and will now meet Bay of Plenty on Saturday afternoon. There's uncertainly over Aaron Cruden's future following the loss for Waikato.
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