National COVID Cohort Collaborative data enhancements: a path for expanding common data models. - Walters, Kellie M.; Clark, Marshall; Dard, Sofia; Hong, Stephanie S.; Kelly, Elizabeth; Kostka, Kristin; Lee, Adam M.; Miller, Robert T.; Morris, Michele; Palchuk, Matvey B.; Pfaff, Emily R.; Wilcox, Adam B.; et al. (J. Am. Medical Informatics Assoc., 2025)