When did pharmaceutical companies start advertising?
 

When did pharmaceutical companies start advertising?

Started by Valentin, August 14, 2018, 11:57:36 AM

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Rayyan

August 14, 2018, 11:57:36 AM
Hi, I would like to ask you an important problem to ask about this subject, when did pharmaceutical companies start advertising? I thank you for answering me please and do not ignore my subject.
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