USMLEStep 2Lecture NotesUSMLE is a joint program of The Federation of State Medical Boards of the United States, Inc. and the National Board of Medical Examiners.STEP 2 CKLecture Notes2016USMLEInternal MedicineUSMLE is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME), neither of which sponsors or endorses this product. This publication is designed to provide accurate information in regard to the subject matter covered as of its publication date, with the understanding that knowledge and best practice constantly evolve. The publisher is not engaged in rendering medical, legal, accounting, or other professional service. If medical or legal advice or other expert assistance is required, the services of a competent profes-sional should be sought. This publication is not intended for use in clinical practice or the delivery of medical care. To the fullest extent of the law, neither the Publisher nor the Editors assume any liability for any injury and/or damage to persons or property arising out of or related to any use of the material contained in this book. 2015 by Kaplan, Inc. Published by Kaplan Medical, a division of Kaplan, Inc.750 Third AvenueNew York, NY 10017All rights reserved. The text