We are deeply grateful to the editorial staff at Jones & Bartlett Learning for their support and collaboration on this edition. We remain grateful for the efforts of Dr. Susan Kossman and Dr. Robert Lynch, who dutifully pointed out all of our errors and confused writing, as well as made essential suggestions for improving the first edition of this book. We are also in debt to the Master of Science students at Mennonite College of Nursing, Illinois State University, who reviewed the chapters and provided valuable feedback. Thanks also to our families for putting up with many late nights. Their love and support of us throughout this endeavor was a great motivating force.