The Brigham intensive review of internal medicine question and answer companion / edited by Ajay K. Singh, MBBS, FRCP, MBA, Director, Global Programs, Associate Professor of Medicine, Harvard Medical School Physician, Renal Division, Director, Postgraduate Medical Education, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, Joseph Loscalzo, MD, PhD, Hersey Professor Of The Theory and Practice Of Physic, Harvard Medical School, Chairman, Department Of Medicine, Physician-In-Chief, Brigham And Women's Hospital, Boston, Massachusetts.