Funding for this research was provided by:
Division of Cancer Epidemiology and Genetics, National Cancer Institute
Text and Data Mining valid from 2020-05-06
Received: 11 August 2019
Accepted: 26 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Review Boards of the Shanxi Cancer Hospital and Institute (Shanxi Province, Taiyuan, PR China) [single project assurance number S-12118-01] and the National Cancer Institute (Bethesda, MD, USA) [protocol number OH95CN027-E]. Written informed consent was obtained from each patient prior to their participation. The study was performed in accordance with the Declaration of Helsinki.
: No identifiable data from individuals are provided with this manuscript.
: The authors declare no competing interests.