HASANAH, Y. I. F., HARAHAP, Y., & SURYADI, H. (2021). DEVELOPMENT AND VALIDATION METHOD OF CYCLOPHOSPHAMIDE AND 4-HYDROXYCYCLOPHOSPHAMIDE WITH 4-HYDROXYCYCLOPHOSPHAMIDE-D4 AS INTERNAL STANDARD IN DRIED BLOOD SPOTS USING UPLC-MS/MS. International Journal of Applied Pharmaceutics, 13(2), 148-152. https://doi.org/10.22159/ijap.2021v13i2.39590