How Do Epidemiologists Determine Causality?
http://groups.google.com/group/mobilfunk_newsletter/t/2c08619541765dbc
http://omega.twoday.net/search?q=epidemiology
http://omega.twoday.net/search?q=causality
http://omega.twoday.net/search?q=World+Health+Organisation
http://omega.twoday.net/search?q=epidemiology
http://omega.twoday.net/search?q=causality
http://omega.twoday.net/search?q=World+Health+Organisation
Starmail - 16. Okt, 17:06