History of epidemiologic methods-- cohort studies.

Author: Ying QIN ¹ ; Si-Ting ZHAN ; Li-ming LI
Author Information

1. Department of Epidemiology and Health Statistics, School of Public Health, Beijing University, Beijing 100083, China
Publication Type:Journal Article
MeSH: China; Cohort Studies; History, 19th Century; History, 20th Century; Humans
From: Chinese Journal of Epidemiology 2004;25(5):449-451
CountryChina
Language:Chinese