Sattayasai, J. “Certain Metabolites Detected in Magnetic Resonance Spectrum of the Brain: Their Meaning and Clinical Applications”. Srinagarind Medical Journal, vol. 24, no. 4, Nov. 2013, pp. 351-4, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13046.