Children Under 5 Thamalini Silva and Jayasinghe 2015Chandrasekara Silva and Wijesinghe 2005Tilakaratne and wijesinghe 2011Scimshaw and Viteri 2010Rytter et al 2014Muthayya et al 2013Marasinghe Chkrewarthy Abeysena & Rajindrajith 2015Hettiarchchi et al 2010 supplementation statusHettiarachchi lekamwasam liyanage 2011Elankumaran 2003Dr Manjula and Liyanage 2012De Silva 2009Calder et al 2006