Prevalence of Exclusive Breastfeeding Among US Infants: The Third National Health and Nutrition Examination Survey (Phase II, 1991-1994).
Li, Ruowei MD, PhD; Ogden, Cynthia PhD; Ballew, Carol PhD; Gillespie, Cathleen BSc; Grummer-Strawn, Laurence PhD
American Journal of Public Health.
ETHICS IN PUBLIC HEALTH. 92(7):1107-1110, July 2002.