Who is sicker?
A San Francisco mother says she and her husband will eventually decide if their 2-year-old or 4-year-old go first if and when there is a match for stem cell transplant.
Both boys have rare, genetic bone marrow diseases.
Gia Vang has the story in the video above.
A San Francisco boy with a rare bone marrow disease has been on the waitlist for more than a year. Gia Vang reports.