Musram, W., and E. Setiadi. “The Effect of Storage of Blood Specimens on Erythrocyte Transketolase Activity and Thiamine Pyrophosphate effect<br /><Br /&gt;”. Medical Journal of Indonesia, Vol. 1, no. 2, June 1992, pp. 91-3, doi:10.13181/mji.v1i2.3582.