1Royal London Hospital;
2Royal Surrey County Hospital NHS Trust;
3Homerton Hospital;
4Brighton and Sussex University Hospitals NHS Trust;
5Queen’s Hospital London and King George Hospital;
6Northwick Park Hospital;
7Chelsea and Westminster Hospital;
8John Radcliffe Hospital;
9Royal Cornwall Hospitals NHS Trust;
10Royal Infirmary of Edinburgh;
11Norfolk and Norwich University Hospital;
12Walsall Manor Hospital;
13Rotunda Hospital, Dublin;
14Barking, Havering and Redbridge University Hospitals NHS Trust;
15North Manchester General Hospital;
16Northampton General Hospital;
17Royal Gwent Hospital Aneurin Bevan Health Board;
18Plymouth Hospitals NHS Trust;
19Poole Hospital;
20Salisbury District and General Hospital;
21University College Hospital;
22Cardiff University School of Medicine;
23Birmingham Women’s Hospital;
24Royal Victoria Infirmary;
25Gloucestershire Hospitals NHS Foundation Trust.
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Correspondence at: Elizabeth Ball, Royal London Hospital, E-mail: elizabeth.ball9@nhs.net
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