STEINECK, Gunnar; KASS, Philip H.; AHLBOM, Anders. A Comprehensive Clinical Epidemiological Theory Based On the Concept of the Source Person-Time and Four Distinct Study Stages. Acta Oncologica, [S. l.], v. 37, n. 1, p. 15–23, 1998. DOI: 10.1080/028418698423131. Disponível em: https://medicaljournalssweden.se/actaoncologica/article/view/27581. Acesso em: 13 may. 2026.