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Kiecolt-Glaser JK, Glaser R, Gravenstein S, Malarkey WB, Sheridan J.Kiecolt-Glaser JK, et al.Proc Natl Acad Sci U S A. 1996 Apr 2;93(7):3043-7. doi: 10.1073/pnas.93.7.3043.Proc Natl Acad Sci U S A. 1996.PMID: 8610165Free PMC article.