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Niwakawa M, Yamaguchi R, Onozawa Y, Yasui H, Taku K, Naito T, Akinaga S, Boku N, Yamamoto N.Niwakawa M, et al. Among authors: akinaga s.Cancer Sci. 2013 Aug;104(8):1039-44. doi: 10.1111/cas.12197. Epub 2013 Jun 21.Cancer Sci. 2013.PMID: 23679664Free PMC article.Clinical Trial.