The objective of this NOFO is to notify Program Director(s)/Principal Investigator(s) (PD(s)/PI(s)) holding specific types of research grants (activity codes listed above) that funds are available for competitive revisions to enhance the diversity of the research workforce by recruiting and supporting students, post doctorates, and eligible investigators from diverse backgrounds, including those from groups that have been shown to be underrepresented in health services research. This opportunity is also available to PD(s)/PI(s) of research grants who are or become disabled and need additional support to accommodate their disability in order to continue to work on the research project