帮忙找两篇文章，谢谢

Pharmacoeconomics. 2011 Apr 1;29(4):331-41. doi: 10.2165/11586110-000000000-00000.
Economic burden of renal cell carcinoma in the US: Part II--an updated analysis.
Shih YC, Chien CR, Xu Y, Pan IW, Smith GL, Buchholz TA.


Pharmacoeconomics. 2011 Apr 1;29(4):315-29. doi: 10.2165/11586100-000000000-00000.
Economic burden of renal cell carcinoma: part I--an updated review.
Shih YC, Chien CR, Xu Y, Pan IW, Smith GL, Buchholz TA.