Watch the Department of Medicine's March 22, 2023 Grand Rounds, the Neff Invited Lecture: "Contributions of Environmental and Social Determinants to Health Disparities in COPD," presented by Nadia N. Hansel, MD, MPH, Interim Director, Department of Medicine; Interim Physician-in-Chief, The Johns Hopkins H.ospital; Professor, Division of Pulmonary & Critical Care Medicine, Johns Hopkins School of Medicine.