Enrolling and retaining a representative population in the NIH Researching COVID to Enhance Recovery (RECOVER)-Adult Cohort. - Berry J; Gander JC; Lu J; Aguilar FAA; Teunis L; Ryerson AB; de Ramirez S; Donohue SE; Mehta C; Han JE; Cribbs SK; Walker TA; et al. (Research square, 2026)