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Castleberry RP, Kun LE, Shuster JJ, Altshuler G, Smith IE, Nitschke R, Wharam M, McWilliams N, Joshi V, Hayes FA.Castleberry RP, et al.J Clin Oncol. 1991 May;9(5):789-95. doi: 10.1200/JCO.1991.9.5.789.J Clin Oncol. 1991.PMID: 2016621Clinical Trial.