Medicine: Prep Manual for Undergraduates About the Author K George Mathew (MD) is working as Associate Specialist, Department of Orthogeriatrics, Torbay Hospital, Torquay, Devon, London. He was formerly Associate Professor, Department of Medicine, Kasturba Medical College, Manipal, Karnataka, India. Praveen Aggarwal (MD, DNB) is Professor and Head at Division of Emergency Medicine, All India Institute of Medical Sciences, New Delhi.