I would like to acknowledge the invaluable contributions provided by the McGraw Hill editorial team of Michael Weitz and Christie Naglieri, Sheryl Krato, Catherine Saggese, and Anthony Landi for helping make this review text successful. I am grateful to the Peggy L Sankey family for their kind and generous support of my endeavors to provide the best possible medical education to students around the globe. Finally, I would like to thank my wife Kara Wright for her incredible support and encouragement throughout the process of completing this text.