unreported

In 2008 alone as many as 35 people with albinism were murdered, while many other deaths probably went unreported.

"Other thefts are likely unreported and remain unknown as attributing cyber thefts to North Korea is not an exact science."

BBC Verify has now identified another previously unreported blast at a northern wing staircase at practically the same time, which was overshadowed by the "double-tap" strike on the eastern staircase.

The government said unreported removals were only a small factor in the progress being made on the waiting list, saying the NHS was still managing to treat an increasing number of patients.

According to NHS Wales, it is thought about one to three of every 100 pregnant women get HG, although some cases go unreported.