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5. EPIDEMIOLOGICAL STUDIES - WHO
www.who.int277 5. EPIDEMIOLOGICAL STUDIES This chapter reviews observational and experimental epidemio-logical studies that have been conducted to determine associations
Epidemiology of occupational health
www.euro.who.intstudies are discussed in Chapters 8 -10. The following chapters address specific aspects such as the study of combined effects (Chapter 11), the statistical analysis of epidemiological data (Chapter 13), the validity aspects of epidemio-logical studies, including consideration on the problems of "false positive" and