A music video that started as a young cancer patient's way to cope with his illness has gone viral.

Chris Rumble, 22, was diagnosed in April with leukemia. While undergoing treatment at Children's Hospital in Seattle, Rumble, whose family has ties to Barrie, Ont., decided to make a music video set to Kelly Clarkson's hit song, "Stronger."

The video features patients, hospital staff and family members dancing and lip-synching the tune. Some patients hold up signs with the words "hope" and "fighter". Many of the children are bald and attached to IVs as they sing: "What doesn't kill you makes you stronger."