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2. Committee on Nutrition of the American Academy of Pediatrics: Breast-feeding;American Academy of Pediatrics Association;Pediatrics,1980
3. Answering Key Questions: Recommendations from the Expert Meeting on Optimal Infant Feeding Practices,1991
4. Effects of age of introduction of complementary foods on infant breast milk intake, total energy intake and growth: a randomized intervention study in Honduras;Cohen;Lancet,1994
5. Economic aspects of breastfeeding;Butz,1978