; or (ii) subject to subparagraph (C), any additional information other than such information as is required pursuant to the form described in subparagraph (A). (C) Optional information For purposes of subparagraphs (A) and (B)(ii), the form may include a requirement that the referring health care provider attest that the individual is eligible to participate in the clinical trial pursuant to the trial protocol and that individual participation in such trial would be appropriate. (D) Review of information (i) In general A State plan under this title shall establish a process for timely review by the State agency of the form and information submitted pursuant to subparagraph (A) and, not later than 48 hours after receipt of such form, confirmation that the information provided in such form satisfies the requirements established under such subparagraph, with such process to include establishment and operation of a 24-hour, toll-free telephone number and email address to provide for expedited communication. (ii) Failure to respond If an individual or the referring health care provider does not receive a response or request for additional information from the State agency following the 48-hour period described in clause (i), the information provided in the form may be presumed to satisfy the requirements established under this paragraph. (b) Encouragement of participation in approved clinical trials (1) Reasonably accessible provider For purposes of participation in an approved clinical trial by an individual eligible for medical assistance under this title, the State agency administering the State plan shall make reasonable efforts to ensure that the individual is provided with access to a provider who is— (A) participating in the approved clinical trial; (B) located not more than 25 miles from the residence of the individual (or, if no such provider is available, as close as possible to the residence of the individual)