Zhang, Jing
Crichton, Siobhan
Dixon, Alison
Seylanova, Nina
Peng, Zhiyong Y.
Ostermann, Marlies http://orcid.org/0000-0001-9500-9080
Article History
Received: 24 September 2019
Accepted: 13 November 2019
First Online: 3 December 2019
Ethics approval and consent to participate
: The study had institutional approval. Need for individual informed consent was waived as this was a retrospective analysis of data collected prospectively for routine care, and there was no breach of privacy or anonymity (UK National Research Ethics Service).
: Not applicable.
: The authors declare that they have no competing interests.