(e) In the case of any drug for which an approval of an application filed pursuant to this section is in effect, the [applicant] shall establish and maintain such records, and make such reports to the director, of data relating to clinical experience and other data or information, received or otherwise obtained by such applicant with respect to such drugs, as the director may by regulation, or by order with respect to such application, prescribe; provided that regulations and orders issued under this subsection and under subsection (d) shall have due regard for the professional ethics of the medical profession and the interests of patients and shall provide, where the director deems it to be appropriate, for the examination, upon request, by the persons to whom such regulations or orders are applicable, of similar information received or otherwise obtained by the director. Every person required under this section to maintain records, and every person in charge or custody thereof, shall, upon request of an officer or employee designated by the director permit such officer or employee at all reasonable times to have access to and copy and verify such records.