four patients with the acquired immunodeficiency syndrome , and a history of pneumocystis carinii pneumonia developed severe pancytopenia ( hemoglobin , less than 85 g/l ; granulocytes , less than or equal to 0.5 x 10 ( 9 ) /l ; platelets , less than or equal to 30 x 10 ( 9 ) /l ) 12 to 17 weeks after the initiation of azidothymidine ( azt ) therapy .
C0001175
acquired immunodeficiency syndrome
C0043474
azidothymidine