Funding for this research was provided by:
Text and Data Mining valid from 2018-04-23
First Online: 23 April 2018
Compliance with Ethical Standards
: This work was supported in part by Ipsen. The funder sponsored the purchase of SEER-Medicare data and provided funding for analytical support.
: Chan Shen, Arvind Dasari, Dian Gu, Yiyi Chu, Shouhao Zhou, Ying Xu, Daniel Halperin, Shuangshuang Fu, and Ya-Chen Tina Shih declare they have no financial or non-financial conflicts of interest that are directly relevant to the content of this article. James C. Yao declares consulting fees or honorarium from Novartis and Ipsen.
: The data source used for this study is SEER registry data linked with Medicare claims. It is available upon request from the SEER-Medicare program.