The phs regulations about financial conflict of interests require which party to disclose significant financial conflicts of interest? organization applicants submitting marketing applications for drugs, biologics, or devices sponsor irb member resea

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.

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