Corwin Q. Edwards is a general internist, actively involved in teaching house staff and medical students. He has studied and published in the areas of disorders of iron metabolism; porphyria cutanea tarda, both sporadic and familial; iron-loading anemias; and treatment of type 1 diabetics with an insulin infusion pump. He has studied disorders of iron metabolism, hemochromatosis, other iron-loading disorders, porphyria cutanea tarda, and the use of insulin infusion pumps during pregnancy in women with type 1 diabetes mellitus.