Virtual integration involves contractual links between HMOs and physician groups, hospitals, and other provider units. Source: How Health Care Is Organized—II: Health Delivery Systems, Understanding Health Policy: A Clinical Approach, 7e Citation: Bodenheimer T, Grumbach K. Understanding Health Policy: A Clinical Approach, 7e; 2016 Available at: https://accesspharmacy.mhmedical.com/DownloadImage.aspx?image=/data/Books/1790/p9781259584756-ch006_f002.png&sec=121191599&BookID=1790&ChapterSecID=121191549&imagename= Accessed: October 17, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved