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Akaza, Hideyuki, et al. "A Large-scale Prospective Registration Study of the Safety and Efficacy of Sorafenib Tosylate in Unresectable or Metastatic Renal Cell Carcinoma in Japan: Results of Over 3200 Consecutive Cases in Post-marketing All-patient Surveillance." Jpn J Clin Oncol 2015.

Akaza, Hideyuki, et al. "A Large-scale Prospective Registration Study of the Safety and Efficacy of Sorafenib Tosylate in Unresectable or Metastatic Renal Cell Carcinoma in Japan: Results of Over 3200 Consecutive Cases in Post-marketing All-patient Surveillance." Jpn J Clin Oncol 2015.