Funding for this research was provided by:
tommy's baby charity
medical research foundation (MR/R023166/1)
Received: 18 August 2021
Accepted: 27 October 2021
First Online: 17 November 2021
: Ethical approval was obtained from the local ethical committee North West REC (08/H1010/55 + 5) and all participants gave written informed consent.
: All authors have given their consent for publication of the manuscript in Biology of Sex Differences.
: The authors declare no commercial or financial competing interests.