Received: 11 March 2021
Accepted: 13 July 2021
First Online: 28 July 2021
: Individual participant data that underlie the results reported in this article, after de-identification will be available on request, beginning 9 months and ending 36 months following article publication, to investigators whose proposed use of the data has been approved by an independent review committee (KCL Women’s Health Review Committee).
: Not applicable.
: The authors declare no competing interests.