Katoch, G., Sharma, S., Sharma, M., Gunjiganvi, A. and Singhal, A. 2016. Association of infant and maternal serum 25-hydroxy vitamin d levels with severity of pneumonia in infants. International Journal of Contemporary Pediatrics. 3, 4 (Dec. 2016), 1256–1261. DOI:https://doi.org/10.18203/2349-3291.ijcp20163655.