Bryson Dickman (left), 11, gives sister Sarah Dickman (right), 12, a lift on his bike at their Acworth home Sunday, April 29, 2012. When Joe and Lori Dickman's daughter Sarah needed a kidney transplant, they posted fliers everywhere and a stranger donated a kidney to their daughter. Four years later their son Bryson, who seemed the picture of health, suddenly fell ill to the same rare kidney disease. Again, the couple put up fliers everywhere, and waited and waited. Five months later they received one call, but it was the only one that was needed. The caller was a perfect match, and Bryson is doing well.