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    • Promotion of breastfeeding in Costa Rica: the Puriscal study 

      Mata Jiménez, Leonardo; Sáenz, Patricia; Araya, José R.; Allen, María de los Ángeles; García, María E.; Carvajal, Juan J. (1988-09-01)
      The decline in rate and duration of breastfeeding in urban areas in developing countries seems to have resulted from the transition from extended to nuclear cofamilies and exposure of young mothers to influences affecting ...