Nanda, R., S. Patel, S. Sahoo, and E. Mohapatra. “Review of Pre-Analytical Errors in Oral Glucose Tolerance Testing in a Tertiary Care Hospital”. Journal of Nepal Health Research Council, vol. 16, no. 1, Mar. 2018, pp. 6-10, https://nepjol.info/index.php/JNHRC/article/view/19353.