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Marguerite M. Jackson, Patricia Lynch, Diana C. McPherson, M. Jeanne Cummings, Nancy C. Greenawalt, Clinical Savvy: Why Not Treat All Body Substances as Infectious?, The American Journal of Nursing, Vol. 87, No. 9 (Sep., 1987), pp. 1137-1139
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Jackson et al. (1987) studied this question.
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