We the medical editors, gratefully acknowledge the work of our Project Manager, Sarah M. Granlund; the Senior Editors at McGraw-Hill, Anne Sydor and Brian Belval; our Project Development Editor, Peter Boyle; our Senior Project Manager at MPS Limited, Vipra Fauzdar; the copy editors; the staff of the Heart Station at Wake Forest Baptist Health (especially Simone Holmes); and all the technical experts who helped us produce this book.