Many modifications have been made in this edition.Based on 20th Edition of Harrison’s Principles of Internal Medicine.Follows multiple choice questions format.Includes over 15,000 MCQs.Incorporates the recent advances in medicine.It is sign-posted with resources and references for further reading.The chapters and page numbers mentioned is the same as in 20th edition of Harrison’s Principles of Internal Medicine.Comprises relevant studies from the leading medical journals from the world over.It caters to medical professionals at all levels.