Haematology is a sub specialized field of internal medicine which helps in the treatment of diseases of blood producing organs and blood. Doctors those who have specialization in this field are referred as haematologists. These doctors can provide treatment for sickle cell anaemia. Other than sickle cell these doctors can also provide treatment for other genetic blood disorders, cancer of blood, haemophilia, leukaemia and many more infectious diseases like hepatitis. They also perform procedures like stem cell transplant, marrow transplantation and blood transfusions.