Retrospective studies: A review for the clinician: Sartwell PE: Ann Int Med 81: 381–386, 1974
- 31 December 1979
- journal article
- book review
- Published by Elsevier in Journal of Chronic Diseases
- Vol. 32 (1-2)
- https://doi.org/10.1016/0021-9681(79)90037-7