“This well written book is both concise and comprehensive. This is the sort of book that students will appreciate when they first learn about clinical trials the busy health professional will use as a quick reference guide the lay person will understand and the experienced investigator will benefit from because it will challenge and defy current paradigms.” (HerbalGram, February 2009)

"The most useful, important, relevant, thoughtful, and thought-provoking books about medical research … .The readers of this new book may feel a little confused or tired or worried about aspects of clinical trials, but they are sure to find a great deal of help and support at the same time. Congratulations—as always—to Alejandro Jadad and the unstoppable Murray Enkin." (Birth, September 2008)