guideline

He has come across patients that do not fit the recommended guidelines who have received private prescriptions.

"I have seen it suggested that the guideline instructs sentencers to impose a more lenient sentence on those from ethnic minorities than white offenders," he said.

Qatar Airways said it followed appropriate guidelines and apologised for "any inconvenience or distress this incident may have caused".

But some still used the 1975 junta-issued directive as a guideline, and would cut the hair of students who didn't adhere.

The group told the BBC they wanted better guidelines set out from institutions on AI, and its use, to keep everyone on a level playing field.