Hemophilia is an age-old disease, but the distinction between hemophilia A and B was not made until the 1940s and 1950s. At that time, it was a disease with a very poor prognosis with an expected median survival of little more than 10 years. Since then, evolution of the understanding of the disease and treatment has been explosive. In this book, hemophilia is addressed from both a basic science and a practical perspective. The eight chapters are written by some of the most distinguished hemophilia experts in the world, sometimes in collaboration with members of the next generation of professionals. The content is up to date, reliable and written in a manner that will engage and educate less-experienced staff at hemophilia treatment centers and hematology departments to promote the development of care in hemophilia. The book will also interest professionals from related disciplines, together with students and administrators.