Caregiver-Patient Networks Illustration (IMAGE) University of Maryland Caption This is an illustration of dense (left) and sparse (right) patient ICU social networks. Patients in the circle that share a nurse are connected by lines (links), while patients that share a physician have the same shade/color (gray or black). Credit University of Maryland Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.