Simultaneous quantification of free and esterified cholesterol extracted from plasma by 13C NMR spectroscopy E. Baguet, T. Magot, K. Ouguerram, R. J. Robins and R. J. WeesieAnalusis, 27 10 (1999) 876-881DOI: https://doi.org/10.1051/analusis:1999157