More difficult to access as a PDF, but once I got it up it had no details that 15 seconds with your doc wouldn't give you. It was straight and to the point, which is good. I think there might be some better links out there tho...

Nice, succinct answer. But it's a pdf rather than a website. The publishers did not bother with visual presentation in the slightest.

Not a whole lot of information on asthma.