Griffiths, Edward
Funding for this research was provided by:
bristow helicopters ltd
ministry of defence
Article History
Received: 4 August 2021
Accepted: 4 November 2021
First Online: 20 November 2021
Declarations
:
: Not applicable.
: Written informed consent for publication was obtained for all images.
: Author declare that he have no competing interests to this work.