Kristi Ouimet, of Antioch, tends to her son Matthew, 21 months, as he does dialysis at the UCSF Medical Center in San Francisco, Calif. on Wednesday, Oct. 17, 2012. Summary: Matthew suffers from primary hyperoxaluria type1, a liver disease that also affects the kidneys and can affect other organs if untreated. He undergoes dialysis six times per week, and is on the donor list awaiting both a liver and kidneys, which must come from a deceased donor. Kristi Ouimet and her husband Kelly also have two other children, Molly, 10, and Patrick, 7. Molly also has the disease, but does not need to do dialysis yet.