1. Breasted JH. The Edwin Smith surgical papyrus. Vol. 1. Hieroglyphic transliteration, translation, and commentary. Chicago, IL: University of Chicago Press; 1930. p. 324–7.
2. Wangensteen OH, Wangensteen SD. The rise of surgery: from empiric craft to scientific discipline. Minneapolis, MN: University of Minnesota Press; 1978. p. 567–72.
3. Cecil RL, Loeb RF, Gutman AB, McDermott W, Wolf HG, editors. Textbook of medicine. 10th ed. Philadelphia, PA: WB Saunders Company; 1959.
4. Bell ET. Tumors. In: Bell ET, editor. Textbook of pathology. 3rd ed. Philadelphia, PA: Lea & Fabiger; 1938. p. 232–371.
5. Roentgen WC. On a new kind of rays (translation). Br J Radiol. 1931;4:32.