I would like to gratefully thank my colleagues for the support and generous contributions of their expertise and time, which made this updated and comprehensive text possible.

Many thanks to Lori Ashley, Jason R. Baron, Barb Blackburn, Barclay Blair, Robert Bogue, Charmaine Brooks, Baird Brueseke, Ken Chasse, Monica Crocker, Charles Dollar, Mark Driskill, Seth Early, Sam Fossett, Dr. Patricia Franks, Randy Kahn, Dennis Kessler, Darra Hoffman, Doug Laney, Paula Lederman, Reynold Leming, Barry Murphy, Robert Seiner, Teresa Schoch, Andrew Ysasi, and Bassam Zarkout.

I am truly honored to include their insightful work and owe them a great debt of gratitude.