When was Thalassemia discovered and by whom?

When was Thalassemia discovered and by whom?

.Thalassemia = the most severe of which is beta thalassemia major. Beta thalassemia major is the homozygous form of...evident from an early age. This thalassemia is also called Cooley's anemia, after its discoverer.
THALASSEMIA MAJOR (COOLEYS ANEMIA)1925
Life-threatening hereditary anemia due to a failure to produce hemoglobin's beta chain. The required blood transfusions result in iron overload
Thalassemia was first described in peoples of the Mediterranean region and Southeast Asia. In fact, in Greek, the word thalassemia means sea. The most severe form of beta thalassemia is thalassemia major, or Cooley anemia. The syndrome of Cooley anemia, first described in 1925, is caused by the complete absence of beta-globin gene production. Milder forms of thalassemia have also been recognized and include beta thalassemia intermedia, beta thalassemia minor, and alpha thalassemia.

The thalassemias were first discovered by Thomas Cooley and Pearl Lee in 1975. Early cases of the disease were reported in children of Mediterranean descent and therefore the disease was named after the Greek word for sea, thalasa.

Thalassemia was discovered by a pediatrician named Dr. Thomas Benton Cooley in 1925 (hence the name Cooley's anemia.)
The name thalassemia was coined later by Dr. George Whipple and Dr. Wm Bradford (thalassa in Greek means the sea & -emia means something in the blood) so thalassemia literally means sea in the blood.
It's a defect in the molecule of hemoglobin in red blood cells (that carries O2)