Have Tom Ten
Department of Biostatistics and Epidemiology, University of Pennsylvania School of Medicine, Blockley Hall, 6th Floor, 423 Guardian Drive, Philadelphia, Pennsylvania 19104-6021, U.S.A.
Biometrics. 2007 Sep;63(3):654-5. doi: 10.1111/j.1541-0420.2007.00847_3.x.