Ahmed Elhadi Elsadig, Abdel Rahim M. Muddathir, Elwaleed M. Elamin, Nasr Eldin MA Shrif and Hisham Ali Waggiallah, 2022. Effect of CYP2C9*2 and VKORC-1639G/A Polymorphisms on Warfarin Doses Requirements in Sudanese Patients. International Journal of Pharmacology, 18: 1366-1373.