. 2018 Jan 31;87(1):22–26.
Copyright © 2018 Ulster Medical Society
The Ulster Medical Society grants to all users on the basis of a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Licence the right to alter or build upon the work non-commercially, as long as the author is credited and the new creation is licensed under identical terms.
Fig 1.
Disposition of subjects