1. Thacker SB, Berkelman RL: Public health surveillance in the United States. Epidemiol Rev. 1988, 10: 164-190.
2. Thacker SB: Historical development. In Principles and Practice of Public Health Surveillance. Edited by: Teutsch SM, Churchill RE. 2000, New York: Oxford University Press, Inc, 1-16.
3. Centers for Disease Control and Prevention: Updated guidelines for evaluating public health surveillance systems: Recommendations from the Guidelines Working Group. MMWR. 2001, 50 (RR-13): 1-35.
4. Centers for Disease Control: Guidelines for evaluating surveillance systems. MMWR. 1988, 37 (No.S-5): 1-18.
5. Koo D, Wetterhall SF: History and current status of the National Notifiable Diseases Surveillance System. Journal of Public Health Manag Pract. 1996, 2: 4-10.