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Back AL, Arnold RM, Baile WF, Tulsky JA, Fryer-Edwards K.Back AL, et al.CA Cancer J Clin. 2005 May-Jun;55(3):164-77. doi: 10.3322/canjclin.55.3.164.CA Cancer J Clin. 2005.PMID: 15890639Free article.Review.