Document is current

Article History

Received: 27 July 2020

Revised: 6 October 2020

Accepted: 16 October 2020

First Online: 4 November 2020

Ethics approval and consent to participate

: Ethics approval was not required for this epidemiological study.

: Not applicable.

: All data used in this paper (individual case listings as well as US population mortality data) may be accessed and analysed via the SEER*Stat web program following the submission of a request for access to the data at .

: The authors declare no competing interests.

: This work was supported by Cancer Research UK (Grant Number C41379/A27583). The study funders had no role in the design of the study, the collection, analysis and interpretation of the data, the writing of the paper or the decision to submit the paper for publication.