M. Saiedullah, N. Chowdhury, M. Khan, S. Hayat, S. Begum, and M. R. Rahman, “Comparison of Regression Equation and Friedewald’s Formula with Direct Measurement of Low-density Lipoprotein Cholesterol in Bangladeshi Population”, J. Sci. Res., vol. 6, no. 1, pp. 143–152, Dec. 2013.