; (5) has no history of a strong position on the thimerosal or vaccine safety controversy; and (6) is not currently an employee of, or otherwise directly or indirectly receiving funds from, a pharmaceutical company or the Centers for Disease Control. (d) Target populations The Secretary shall seek to include in the study under this section populations in the United States that have traditionally remained unvaccinated for religious or other reasons, which populations may include Old Order Amish, members of clinical practices (such as the Homefirst practice in Chicago) who choose alternative medical practices, practitioners of anthroposophic lifestyles, and others who have chosen not to be vaccinated. (e) Timing Not later than 120 days after the date of the enactment of this Act, the Secretary shall issue a request for proposals to conduct the study required by this section. Not later than 120 days after receipt of any such proposal, the Secretary shall approve or disapprove the proposal. If the Secretary disapproves the proposal, the Secretary shall provide the applicant involved with a written explanation of the reasons for the disapproval. (f) Transparency To facilitate further research by the Secretary or others, the Secretary shall ensure the preservation of all data, including all data sets, collected or used for purposes of the study under this section.