support for Collaborative Research Centers for Tourette Syndrome. (2) Research Each center under paragraph (1) shall conduct basic and clinical research into Tourette syndrome. Such research should include investigations into the cause, diagnosis, early detection, prevention, control, and treatment of Tourette syndrome. The research conducted by such centers, as a group, shall include research in the fields of developmental neurobiology, neuroscience, genetics, psychology, and pharmacology. (3) Services for patients (A) In general A center under paragraph (1) may expend amounts provided under such paragraph to carry out a program to make individuals aware of opportunities to participate as subjects in research conducted by the centers. (B) Referral and costs A program under subparagraph (A) may, in accordance with such criteria as the Secretary may establish, provide to the subjects described in such subparagraph, referrals for health and other services, and such patient care costs as are required for research. (C) Availability and access The extent to which a center can demonstrate availability and access to clinical services shall be considered by the Secretary in decisions about awarding grants and contracts to applicants which meet the scientific criteria for funding under this subsection. (4) Organization of Collaborative Research Centers for Tourette Syndrome (A) In general A center under paragraph (1) may— (i) use the facilities of a single institution