1. Greenspan A. Miscellaneous arthritides and arthropathies. In: Orthopedic Radiology: A Practical Approach. 3rd ed. Philadelphia: Lippincott, Williams and Wilkins; 2000:486-489.
2. Cotran RS, Robbins SL, Kumar V. Crystal arthropathies. In: Robbins Pathologic Basis of Disease. 5th ed. Philadelphia: WB Saunders Co; 1994:1255-1258.
3. Uri DS, Dalinka MK. Crystal disease. Radiol Clin North Am. 1996;34:359-364.
4. Wyngaarden JB. Gout. In: Cecil RL, Bennett JC, Goldman L (eds). Cecil Textbook of Medicine. 19th ed. Philadelphia: WB Saunders Co; 1992:1107-1115.
5. Andreoli TE, Carpenter CCJ, Griggs RC, Loscalzo J (eds). Hyperuricemia and gout. In: Cecil Essentials of Medicine. 3rd ed. Philadelphia: WB Saunders Co; 1993:441-444.