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  • 1
    Blood DC, Henderson JA, Radostits S. Veterinary Medicine, A Textbook of the Diseases of Cattle, Sheep, Pigs and Horses. 5th ed. Philadelphia , PA : Lea and Febiger, 1979; 24.
  • 2
    Bryant GD, Norman GR. Expressions of probability: Words and numbers (Letter). New Engl J Med 1980; 302:411.
  • 3
    Pauker SG, Kassirer JP. The threshold approach to clinical decision making. New Engl J Med 1980; 302:11091117.
  • 4
    Thrusfield M. Veterinary Epidemiology. London : Butterworth and Co, 1986; 104105, 181–184.
  • 5
    Mayhew IG, de Lahunta A., Whitlock RH, et al. Spinal cord disease in the horse. Cornell Vet 1978; 68(suppl. 6):1207.
  • 6
    Fleiss JL. Statistical methods for Rates and Proportions. Probability and Mathematical Statistics Series: New York , NY : J Wiley & Sons, 1981; 1318.
  • 7
    Mayhew IG, Brown CM, Stowe HD, et al. Equine degenerative myeloencephalopathy: A vitamin E deficiency that may be familial. J Vet Intern Med 1987; 1:4550.