[1] Food & Agr Org United Nations FAO, Sub Reg Off Mesoamer, Panama City, Panama
[2] Food & Agr Org United Nations, Sub Reg Off Mesoamer, Panama City, Panama
[3] Natl Inst Hyg Epidemiol & Microbiol INHEM Cuba, Nutr Div, Havana, Cuba
[4] Univ Panama, Med Sch, Nutr & Dietet Dept, Panama City, Panama
[5] Minist Hlth, Nutr Div, Panama City, Panama