Anitha, A., Poovathinal, S. A., Viswambharan, V., Thanseem, I., Vasu, M. M., & M., R. (2019). Cross-sectional study reveals a high prevalence of vitamin D deficiency among healthy school children in central Kerala, India. International Journal of Contemporary Pediatrics, 6(2), 867–871. https://doi.org/10.18203/2349-3291.ijcp20190745