b'Dr. Mariana Socal is an assistant scientist in the Department of Health Policy and Management at the Johns Hopkins Bloomberg School of Public Health. Stephen Morrissey, the interviewer, is the Executive Managing Editor of the Journal. M.P. Socal and J.A. Greene. Interchangeable Insulins \\u2014 New Pathways for Safe, Effective, Affordable Diabetes Therapy. N Engl J Med 2020;382:981-983.'