- Predicting warfarin dosage in European-Americans and African-Americans using DNA samples linked to an electronic health record. Andrea H. Ramirez, Yaping Shi, Jonathan S. Schildcrout, Jessica T. Delaney, Hua Xu, Matthew T. Oetjens, Rebecca L. Zuvich, Melissa A. Basford, Erica Bowton, Min Jiang, Peter Speltz, Raquel Zink, James Cowan, Jill M. Pulley, Marylyn D. Ritchie, Daniel R. Masys, Dan M. Roden, Dana C. Crawford, Joshua C. Denny, 13, 4, 407-418, Pharmacogenomics, 2012 Mar, PMID: 22329724 PMCID: PMC3361510,