Sandra Lopez (left) and her dog, Coco, greet hospice nurse Heather Meyerend last fall. In the weeks before Lopez died, Meyerend stopped by weekly to check her physical health, pain levels and medications. Amy Pearl/WNYC hide caption

itoggle caption Amy Pearl/WNYC

Medical residents including Dr. Amy Ho (bottom right) helped with first aid at the Pitchfork Music Festival in Chicago. Courtesy Amy Ho hide caption

itoggle caption Courtesy Amy Ho

Victoria Elizabeth Fischer was presented with a white coat by her grandfather, Dr. Christian Van Den Heuvel, at Georgetown University School of Medicine in August. The ceremony marks the start for each new class of medical students. Lisa Helfert/Courtesy of Georgetown University hide caption

itoggle caption Lisa Helfert/Courtesy of Georgetown University

Alana and Troy Pack died in 2003 when a woman abusing pain pills hit the children with her car. The accident has led to a ballot measure that, among other things, would put new constraints on physicians. Courtesy of the Pack family hide caption

itoggle caption Courtesy of the Pack family

Liberian physician Martha Zarway continues work in a temporary clinic while her original facility is disinfected. Tommy Trenchard for NPR hide caption

itoggle caption Tommy Trenchard for NPR