This document contains domains and instruments for the longitudinal assessments in the BACPAC Minimum Dataset. Where applicable, core data elements of the BACPAC Minimum Dataset are taken from previously validated instruments (e.g., PROMIS measures). The BACPAC Minimum Dataset is an expanded version of the HEAL Initiative Core Data Elements. In addition to the longitudinal assessments, the BACPAC Minimum Dataset includes a collection of demographic and baseline characteristic core data elements, which are administered to study participants at baseline only.