Wang, Ping
Zang, Shuang
Zhang, Miao
Li, Guang
Wang, Yan
Qiao, Qiao http://orcid.org/0000-0002-6841-3771
Funding for this research was provided by:
China International Medical Foundation (Z-2014-06-2103)
SHANGHAI ANTI-CANCER FOUNDATION
Article History
Received: 28 October 2021
Accepted: 4 January 2022
First Online: 6 February 2022
Declarations
:
: The authors declare that they have no competing interests.
: The SEER database is an open database. Data-released from the SEER database do not require informed patient con-sent, because cancer is a reportable disease in every state of the United States. The present study complied with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.