See Video at link: http://www.abcnews.go.com/GMA/OnCall/husband-searches-cancer-cure-wifes-death/story?id=9212102&page=2 Throughout his years of groundbreaking research, endocrinologist Dr. David Vesely never gave curing cancer a lot of thought. But then it became personal. "We started to work on cancer when my wife died of breast cancer seven years ago," Vesely said. His wife, Clo, died in 2002, leaving Vesely and their five children behind. Vesely said he directed his sorrow into his work at the James A. Haley Hospital in Tampa, Fla., and seven years later he may have a breakthrough. An Idea From the Heart Vesely said it was originally his son's idea to...