S. Supandi, Y. Harahap, H. Harmita, R. Andalusia, and M. Ika, “ANALYSIS OF 6-MERCAPTOPURINE AND 6-METHYLMERCAPTOPURINE IN DRIED BLOOD SPOTS USING LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY AND ITS APPLICATION IN CHILDHOOD ACUTE LYMPHOBLASTIC LEUKEMIA PATIENTS”, Asian J Pharm Clin Res, vol. 10, no. 9, pp. 120–125, Sep. 2017.