We welcome proposals for ancillary studies to the CODA study. The link on this page provides a first step for proposing an ancillary study: gaining access to a password-protected resource hub with study-related documents (e.g., data-collection instruments and data dictionaries). Also included on the resource hub is a proposal template to complete and submit for review by the CODA Ancillary Studies Committee. Prior to requesting access to the resource hub, it is recommended that you informally discuss your potential proposal with Jason Block or Al Powers, co-chairs of the CODA Ancillary Studies Committee. Thank you.