How UK major trauma centres map out
There is a network of 27 major trauma centres across the UK at the moment but none in Wales.
Independent experts outside Wales are assessing bids by Cardiff and Swansea to become a major trauma centre (MTC).
The absence of an MTC in Wales has been called "embarrassing" and showing Wales falling behind other developed countries.
A recommendation to NHS Wales is imminent although it may still be many months a before a final decision is reached.