Dhingra, Usha, Girish Hiremath, Venugopal P Menon, Pratibha Dhingra, Archana Sarkar, and Sunil Sazawal. 2009. “Zinc Deficiency: Descriptive Epidemiology and Morbidity Among Preschool Children in Peri-Urban Population in Delhi, India”. Journal of Health, Population and Nutrition 27 (5):632-39. https://doi.org/10.3329/jhpn.v27i5.3639.