Dad says son, 6, on heart transplant waiting list is ‘his hero’

You often hear small children say their dads are their heroes – but for Máirtín Mac Gabhann, it’s the other way around.

His son Dáithí, 6, was born with a serious heart condition called hypoplastic left heart syndrome, and is on the waiting list for a heart transplant.

As a result Máirtín, from Belfast, has spent nearly four years fighting to make all...