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The physician uses, selectively, both commercial and scientific sources of information about drugs. Commercial sources are the predominant ones in making physicians aware of new drugs. However, information from both commercial and scientific sources plays a part in the physician's decision to prescribe a drug, and scientific sources become increasingly important as the condition which is to be treated becomes more severe, or as the treatment becomes less clear-cut.
Bauer et al. (Tue,) studied this question.