![Ruth Pfeiffer](https://si.biostat.washington.edu/sites/default/files/styles/person_large/public/people/ruth-pfeiffer-bio-pic.jpg?itok=vh7KMugr)
Senior Investigator, Biostatistics Branch
National Cancer Institute
Division of Cancer Epidemiology & Genetics
Senior Investigator, Biostatistics Branch
National Cancer Institute
Division of Cancer Epidemiology & Genetics