Saiedullah, M., 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”. Journal of Scientific Research, vol. 6, no. 1, Dec. 2013, pp. 143-52, doi:10.3329/jsr.v6i1.14864.