Ralphs, Eleanor
Pembrey, Lucy
West, Jane
Santorelli, Gillian
Article History
Received: 29 November 2020
Accepted: 5 May 2021
First Online: 26 May 2021
Declarations
:
: All methods were carried out in accordance with relevant guidelines and regulations. Informed consent was obtained from all participants or, if subjects are under 18, from a parent or legal guardian. BiB ethical approval was granted by Bradford Research Ethics Committee (Ref 07/H1302/112). Participating women consented at recruitment to access to their routine primary and secondary health care records. Ethical approval for the current study was received from the Ethics Committee at the London School of Hygiene and Tropical Medicine.
: Not applicable.
: The authors declare that they have no competing interests.