KSTP.com | Wis. 6-year-old has 2nd stem cell transplant Chippewa Herald A Wisconsin 6-year-old who suffers from a rare skin disease that causes painful blisters has undergone a second stem cell transplant. His mother, Trisha Knuth, of Darboy, told WLUK-TV (http://bit.ly/MwUMCP) that Charlie Knuth underwent the procedure ... Charlie Knuth undergoes stem cell transplant Saturday |