What is the mechanism for persistent coexistence of drug-susceptible and drug-resistant strains of Streptococcus pneumoniae? Author(s): Colijn C, Cohen T, Fraser C, Hanage W, Goldstein E, Givon-Lavi N, Dagan R, Lipsitch M|Journal: J R Soc Interface|PMID: 19940002| June 2010 The rise of antimicrobial resistance in many pathogens presents a major challenge to the treatment and control of infectious diseases.…
Negative controls: a tool for detecting confounding and bias in observational studies. Author(s): Lipsitch M, Tchetgen Tchetgen E, Cohen T|Journal: Epidemiology|PMID: 20335814| May 2010 Noncausal associations between exposures and outcomes are a threat to validity of causal inference in observational studies. Many techniques have…