The fourth edition of Pharmacoepidemiology is an outstanding and fully comprehensive textbook, which will be an essential resource for all interested in the field—in academia, in regulatory agencies, in industry and in the law. Brian Strom’s classic textbook continues both to reflect the increased maturation of pharmacoepedemiology and to help shape it’s direction. Reviews of previous editions of his celebrated textbook include: «The book is essential reading for anyone interested in pharmacoepidemiology.» INTERNATIONAL JOURNAL OF EPIDEMIOLOGY “…an excellent textbook and a comprehensive reference which belongs in the library of every pharmaceutical manufacturer and regulator." EUROPEAN JOURNAL OF PUBLIC HEALTH