Gina Kennedy (Nutrition Planning, Assessment and Evaluation Service),Guy Nantel (Nutrition Planning, Assessment and Evaluation Service),Prakash Shetty (Nutrition Planning, Assessment and Evaluation Service) 2003: The scourge of "hidden hunger": global dimensions of micronutrient deficiencies, <http://www.fao.org/docrep/005/y8346m/y8346m02.htm>