Kim D, Lauria DT, Poulos C, Dong B, Whittington D. Effect of travel distance on household demand for typhoid vaccines: implications for planning. Int J Health Plann Manage. 2013 Mar 12;Advance Online.
Hauber B, Candrilli S, Snyder EH, McBurney CR. Validation of a model to assess long-term disease progression in Alzheimer's disease patients treated with rivastigmine. Neurobiol Aging. 2004 Jan 1;25:S136.