Acknowledgments

This book benefited greatly from the careful review and suggestions of Eugenia Bastos, Zoran Bursac, David Olaleye, Paul Savarese, Barbara Schneider, Yu Shyr, David Schlotzhauer, and Doug Wielenga. Special thanks to Nicole Ishill at Memorial Sloan-Kettering for reviewing text and testing macros.

I am grateful to Judy Whatley, my editor, for her unfailing help and patience at every stage of the long process that resulted in this book. The following individuals at SAS Press were also instrumental in making this book possible: Mary Beth Steinbach, Kathy Restivo, Candy Farrell, Patrice Cherry, Jennifer Dilley, Shelly Goodin, and Liz Villani. Jeanne Ferneyhough of SAS Institute provided much-needed expert help with SAS/GRAPH.

Steven Larson, Heiko Schöder, Timothy Akhurst, Robert Downey, Richard Wong, John Carrino, and Andre Güettler generously gave permission to use their data sets as examples.

It would not have been possible to undertake such a project without the support and understanding of my wife, Elza, and my daughters, Deniz and Selin. They admirably endured my irregular schedules, attitudes, and mood swings.