Kasim Mohammad, Fouad. “Calculation of 95% Confidence Interval of the Median Lethal Dose Determined by the up-and-down Procedure: A Letter to Editor”. Journal of Ideas in Health 5, no. 3 (August 20, 2022): 725–726. Accessed April 25, 2024. https://jidhealth.com/index.php/jidhealth/article/view/233.