Chapter 1 Introduction Chapter 2 Measures in Epidemiology and Sources of Data Chapter 3 Communicable Diseases Chapter 4 Survey and Cross-sectional Studies Chapter 5 Cohort Studies Chapter 6 Case-control Studies Chapter 7 Experimental Studies Chapter 8 Association and Causation Chapter 9 Bias and Confounding Chapter 10 Screening and Early Detection Chapter 11 Application of Epidemiology in Clinical Practice Chapter 12 Molecular and Genetic Epidemiol0gy Appendix Reference Answers to Selected Study Questions Index