Suchdev P, Addo O, Grant F, Martorell R, Ruth L, Patel M, Juliao P, Quick R, Flores-Ayala R. The effects of selling micronutrient powders on morbidity incidence among preschool children in Western Kenya. European J Nutr Food Saf. 2015 Aug 14;5(5):1011-2. doi: 10.9734/EJNFS/2015/21213
Bradley RH, National Institute of Child Health and Human Development (NICHD) Early Child Care Research Network, McLeod LD. Child care and common communicable illnesses in children aged 37 to 54 months. Arch Pediatr Adolesc. 2003 Feb;157(2):196-200. doi: 10.1001/archpedi.157.2.196