; (2) provide a flat surface; (3) not include a supplemental mattress or soft bedding; and (4) be covered by, and be in compliance with, a regulation or mandatory standard promulgated by the Consumer Product Safety Commission. (e) Preference In awarding grants under subsection (a), the Secretary shall give preference to applicants that have a proven history of developing or delivering interventions for infants and families to support safe sleep, include plans to report evidence of program outcomes, and can demonstrate experience through collaborations and partnerships for delivering services throughout a State or region. (f) Set-Aside Not more than 5 percent of the amount of funds allocated to carry out this section may be used to conduct research into the behavioral risks that lead to unsafe sleep practices and ways to mitigate those risks. (g) Authorization of appropriations There is authorized to be appropriated to carry out this section $5,000,000 for fiscal year 2019 and $7,000,000 for each of fiscal years 2020 through 2023. 399OO–6. Grants for support services (a) In general The Secretary, acting through the Administrator, shall award grants to national organizations, State and local health departments, community-based organizations, and nonprofit organizations for the provisions of support services to families who have had a child die of sudden unexpected infant death and sudden unexplained death in childhood. (b) Application To be eligible to receive a grant under subsection (a), an entity shall submit to the Secretary an application at such time, in such manner, and containing such information as the Secretary may require. (c) Use of funds Amounts received under a grant awarded under subsection (a) may be used to provide grief counseling, education, home visits, 24-hour hotlines, or information, resources, and referrals; ensure access to grief and bereavement services; build capacity in professionals working with families who experience a sudden death