Elizabeth R Zell

Invasive methicillin-resistant Staphylococcus aureus infections in the United States.

Roberta B Carey, Lee H Harrison, Ruth Lynfield, 2007, JAMA.

Effectiveness of pneumococcal conjugate vaccine against presumed bacterial pneumonia hospitalisation in HIV-uninfected South African children: a case–control study

Christine Mulligan, Heather J Zar, Shabir A Madhi, 2015, Thorax.

[Propensity score methods for creating covariate balance in observational studies].

Donald B Rubin, D. Rubin, E. Zell, 2011, Revista espanola de cardiologia.