Plastic Surgery Registrar Mersey Plastic Surgery and Burn Unit.
Received May 8, 2018, and accepted for publication, after revision June 24, 2018.
Conflicts of interest and sources of funding: none declared.
Reprints: Parneet Gill, MBChB MSc MRCS (Eng), Plastic Surgery Registrar, Mersey Plastic Surgery and Burn Unit. E-mail: email@example.com.