The introduction of complementary foods, and the basic rules, the WHO and UNICEF recommendations.
Источники:
http://www.who.int/mediacentre/factsheets/fs342/ru/
http://www.baldar.kg/files/add_food.pdf
http://www.euro.who.int/__data/assets/pdf_file/0005/98303/WS_115_2000FE_R.pdf?ua=1