It happens a lot here. When I was working in the Aged Care facility, suddenly I found everyone "D Vitamin" tablets. Then I learned the drug companies are 'looking after' the doctor's interests. Lot of Aussies used to go to 'Bangkok' for holidays just for one purpose only in 80s and 90s. Now it is reduced a bit. I heard Bangkok was like 'Sonagachi-calcutta' at one time. Cheers!