Don't many of the other countries offer some kind of "free" medical service for everyone? Should they add this to the average income of those countries?
Anecdote time. Here in Argentina we have:
* Free hospitals and free ambulances for emergencies, and even some standard procedures. The quality and waiting time may vary. It's free for everyone. Should they count this as "income"?
* Also we get a compulsory 5% discount of the salary for additional healthcare that is controlled by the working union, this includes dental care. The quality and waiting time may vary. I'm not sure if they would count this 5% as income.
* Also you can pay a private medical plan or pay to a medic for a consultation. The quality and waiting time may vary, but it's usually faster and you have more options to pick a good medic hopefully.