Phlebotomy as a tool in clinical investigation.
D000747:Anemia, Hypochromic; D001815:Bloodletting; D006432:Hemochromatosis / Q000378:metabolism; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D007501:Iron / Q000378:metabolism*; D013103:Spherocytosis, Hereditary; D014680:Veins / Q000601:surgery
D006454:Hemoglobins; D007501:Iron