Basically, some of them will be a bit more virtual. Others, such as where Weihong Song is, could be physical. At McGill, it could be physical because we have a node of people who are able to look at Alzheimer's disease from different perspectives. But in other places, like here in Ottawa, there'll be a few people that are experts in Alzheimer's disease, not enough to have a centre, a physical centre here, but they will be associated with the centre in Toronto or with some other centre in the country.
That's why a network of centres, where you have five or six core, is quite effective. Then people collaborate, and all the data, all the knowledge, and all the technology is available to everyone.