I knew a lot of other people who had stroke. I wanted to help those people by doing a marathon.

I just run as hard as I can for 20 miles, and then race.

Not bad for a 49 year old man [completing the London Marathon in 5h58m]

With the help of other people, I give them their basic needs - toothbrushes, toothpaste and soap so they can wash their hands.

Some people who weren't able to run for more than a couple minutes at once have finished a marathon and they did that within a year starting out in this group.

I think people are coming to the realization that this is going to be a marathon that's going to be running for a period of time and [Merck is] unlikely to pay any money out over the next few years.