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PubMed has lots of articles on this topic. Most of the articles report on the experience of particular countries, or perhaps even at more local levels.

I did not look so hard, but I did not immediately find a review article presenting this concept and giving an overview internationally. There is a 1997 Zimbabwe report from the World Health Organization which sort of does this, but that is only a semi-published conference paper and I wonder if there is something better to cite. If anyone has a good source for this then please share. Blue Rasberry (talk) 22:57, 14 February 2017 (UTC) reply

There are so many papers about this topic for individual countries that anyone could make more specific Wikipedia articles.

Like for example, "Separation of prescribing and dispensing in Malaysia" would be easy to write because there are government, scientific, and journalistic sources discussing this issue and many of them are thorough. Blue Rasberry (talk) 22:58, 14 February 2017 (UTC) reply