Ezra, age 6, suffers from a rare hereditary disease, spherocytosis, which leads to severe anemia. When Ezra was born, his parents were told he had less than two weeks to live, and blood transfusions saved his life. To learn more about HS and other blood disorders, visit ASH's patient resources webpage http://hematology.org/Patients/.

This clip was excerpted from the documentary film "Blood Detectives." To learn more about the film, visit http://www.hematology.org/Publication...