This image provided by the National Center for Missing and Exploited Children shows Porter Stone, 5, who is missing after police say his father, who does not have custody of the boy, took him from a St. Louis hospital where he is on a heart transplant waiting list. St. Louis police Capt. Jim Moran told the newspaper the boy's father, Jeffery Stone, 33, does not have legal custody of the boy and is wanted for "parental kidnapping." The boys doctor told KSDK-TV that Porter's condition is serious and that the boy had about a day's worth of medication left in a portable IV when he was taken and will need medical attention. (AP Photo/National Center for Missing and Exploited Children)