Chand, Suresh, et al. “Development and Validation of a Questionnaire in Hindi Language to Assess Parental Knowledge, Attitude and Practices Regarding Calcium and Vitamin D Deficiency in Children”. Indian Journal of Community Health, vol. 36, no. 2, Apr. 2024, pp. 201-7, doi:10.47203/IJCH.2024.v36i02.008.