Vitamin A deficiency among children younger than 5 y in India: an analysis of national data sets to reflect on the need for vitamin A supplementation

G. Bhanuprakash Reddy, Raghu Pullakhandam, Santu Ghosh, Naveen Kumar Boiroju, Tattari Shalini, Avula Laxmaiah, Hemalatha Rajkumar, Umesh Kapil, Harshpal Singh Sachdev, Anura V. Kurpad