Personal correspondence with CDC staff,
September 2012. Unreleased data.
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Control and Prevention. "Breastfeeding Report Card--United States, 2012."
Retrieved 31 October, 2012, from http://www.cdc.gov/breastfeeding/pdf/2012BreastfeedingReportCard.pdf.
 Bartick, Melissa, and Arnold Reinhold. "The Burden of Suboptimal Breastfeeding in the United States: A Pediatric Cost Analysis." Pediatrics 125, no. 5 (2010): e1048-e56; Donnelly, A., HM Snowden, MJ Renfrew, and MW Woolridge. "Commercial Hospital Discharge Packs for Breastfeeding Women." Cochrane database of systematic reviews (2000); Dungy, C.I., J. Christensen-Szalanski, M. Losch, and D. Russell. "Effect of Discharge Samples on Duration of Breast-Feeding." Pediatrics 90, no. 2 (1992): 233; Rosenberg, Kenneth D., Carissa A. Eastham, Laurin J. Kasehagen, and Alfredo P. Sandoval. "Marketing Infant Formula through Hospitals: The Impact of Commercial Hospital Discharge Packs on Breastfeeding." Am J Public Health 98, no. 2 (2008): 290-95; Snell, BJ, M. Krantz, R. Keeton, K. Delgado, and C. Peckham. "The Association of Formula Samples Given at Hospital Discharge with the Early Duration of Breastfeeding." Journal of Human Lactation 8, no. 2 (1992): 67; Wright, Anne, Sydney Rice, and Susan Wells. "Changing Hospital Practices to Increase the Duration of Breastfeeding." Pediatrics 97, no. 5 (1996): 669-75.
 Sadacharan, R., X. Grossman, E. Sanchez, and A. Merewood. “Trends in US Hospital Distribution of Industry-Sponsored Infant Formula Sample Packs.” Pediatrics 128, no. 4 (2011): 702-05.
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 Ip, S., M. Chung, G. Raman, P. Chew, N. Magula, D. DeVine, T. Trikalinos, and J. Lau. "Breastfeeding and Maternal and Infant Health Outcomes in Developed Countries." Agency for Healthcare Research and Quality Publication, U.S. Department of Healthcare and Human Services. Retrieved 2 November, 2011, from http://www.ahrq.gov/downloads/pub/evidence/pdf/brfout/brfout.pdf; Arenz, S., R. Rückerl, B. Koletzko, and R. Von Kries. "Breast-Feeding and Childhood Obesity—a Systematic Review." International Journal of Obesity 28, no. 10 (2004): 1247-56.
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 Bartick and Reinhold, "The Burden of Suboptimal Breastfeeding in the United States: A Pediatric Cost Analysis."
 Calculations based on prices of store brand and name brand formulas at Walgreens.com in November 2011 and average consumption of 30 oz. of formula per day.
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 Ban the Bags. "Ban the Bags Tool Kit." Retrieved 6 February 2012, from http://www.banthebags.org/.