Public/community health and nursing practice, caring for populations, Christine L. Savage, P hD, RN, FAAN, Professor Emerita Johns Hopkins University School of Nursing, Baltimore, Maryland, Gordon L. Gillespie, PhD, DNP, RN, CEN, CNE, CPEN, PHCNS-BC, ANEF, FAEN, FAAN, Professor University of Cincinnati College of Nursing, Cincinnati, Ohio, Erin R. Whitehouse, PhD, MPH, RN, Epidemiologist Centers for Disease Control and Prevention, Atlanta, Georgia - (online) (data)