What happened when doctors swallowed Lego people's heads?

The medics created a FART - Found And Retrieved Time - score to measure how long it took for the head to come out the other end

Swallowing the heads of Lego people isn't something a doctor would normally put on their resume.

However, a group of six paediatricians from Australia and the UK who downed the small yellow plastic faces in the name of medical research can do just that.