David Brock is Senior Lecturer in International Organization and Strategy at the University of Auckland, New Zealand. In addition to his work on professional organizations he has interests in the areas of technology-driven change; planning and strategy in universities; and planning, strategy, and human resource management in multinational subsidiaries. Michael Powell is Professor of Health Management also at the University of Auckland. His current research interests include changing governance structures in publicly funded healthcare organizations, organizational change and the development of integrated care structures. C. R. (Bob) Hinings is Thornton A. Graham Professor of Business and Director of the Centre for Professional Service Management at the University of Alberta, Canada. His work covers areas such as change in professional organizations, the emergence of organizational forms, and the recomposition of professional fields.