Dan Jansen, who lost his sister Jane to leukemia during the 1988 Olympics, accepted Madison golfer Andy Northâ??s invitation to participate in the second annual Andy North & Friends cancer benefit, which begins tonight at Kalahari Resort in Wisconsin Dells and raises funds for the University of Wisconsin Carbone Cancer Center. The UW Carbone Cancer Center, established in 1973, is the only comprehensive cancer center in Wisconsin, treating more than 30,000 patients annually.