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American Journal of Public Health|August 5, 1999
Individual causal models and population system models in epidemiologyJ S Koopman, J W Lynch
American Journal of Epidemiology|May 1, 1978
Diarrhea and school toilet hygiene in Cali, ColombiaJ S Koopman
American Journal of Epidemiology|June 1, 1981
Interaction between discrete causesJ S Koopman
The American Journal of Tropical Medicine and Hygiene|March 1, 1979
The investigation of related cases for the control of diarrhea in cities in developing countriesJ S Koopman
Epidemiology and Infection|November 9, 2005
Maximizing statistical power in group-randomized vaccine trialsT Riggs, J S Koopman
The Journal of Infectious Diseases|March 1, 1975
The role of cutaneous diphtheria infections in a diphtheria epidemicJ S Koopman, J Campbell
The Journal of Membrane Biology|October 10, 1998
Nitric oxide inhibition of the rat olfactory cyclic nucleotide-gated cation channelJ W Lynch
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