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Anderson G, Steinberg EP, Whittle J, Powe NR, Antebi S, Herbert R.Anderson G, et al. Among authors: powe nr.JAMA. 1990 Feb 16;263(7):967-72.JAMA. 1990.PMID: 2105404
Steinberg EP, Anderson GF, Powe NR, Sakin JW, Kinnison ML, Neuman P, White RI Jr.Steinberg EP, et al. Among authors: powe nr.AJR Am J Roentgenol. 1988 Aug;151(2):271-4. doi: 10.2214/ajr.151.2.271.AJR Am J Roentgenol. 1988.PMID: 3260719