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Tabar L, Vitak B, Yen MF, Chen HH, Smith RA, Duffy SW.Tabar L, et al. Among authors: duffy sw.J Med Screen. 2004;11(3):126-9. doi: 10.1258/0969141041732175.J Med Screen. 2004.PMID: 15333270Clinical Trial.
Tabàr L, Fagerberg G, Duffy SW, Day NE, Gad A, Gröntoft O.Tabàr L, et al. Among authors: duffy sw.Radiol Clin North Am. 1992 Jan;30(1):187-210.Radiol Clin North Am. 1992.PMID: 1732926Clinical Trial.