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3/ There are two countries in the world which allow Pharma to advertise on mass media: New Zealand and the U.S. So why does less than half a percent allow it?

Absolutely. But Big Pharma finds other channels, more concealed ones. I've seen a debate where UK physicians were utterly surprised to learn that Pfizer & others do substantially finance the national UK medical doctors association...

2/ There is a saying, follow the money. The one footing the bill usually has a lot to say about what takes place.

4/ There are examples of where companies that do not advertise receive unfavorable coverage. What do you think happens when one is paying billions?

5/ It is obvious what is taking place. There is no way a media head is going to upset the companies paying the bills.