Those are cheap (relatively) diagnostics, NOT heart transplants!
"patients were subsequently managed by general practitioners, in consultation with cardiologists or the admitting physician".
Do you know what that means? That means your heart attack care will be handled by a GP, and probably, by an Internist - not even a Cardiologist. (Internists are more common).
They did however, find not one, not two, but three ways to successfully predict which one's would die earlier, and approximately when they would die.
Oh! That's FABULOUS medical care, right there!
