VAN TUAN, Nguyen. EPIDEMIOLOGICAL RESEARCH IN HOSPITAL: KEY CONSIDERATIONS FOR DESIGN AND INTERPRETATION. Journal of Health and Aging, Vietnam, v. 2, n. 6, p. 1–8, 2026. DOI: 10.63947/bvtn.v2i6.1. Disponível em: https://tcsuckhoelaohoa.vn/bvtn/article/view/170. Acesso em: 15 mar. 2026.