 2. Agree to practice true abstinence2 which must be reviewed on a monthly basis and source documented or agree to the use of highly effective methods of contraception from 28 days prior to starting durvalumab or azacitidine, and must agree to continue using such precautions while taking durvalumab or azacitidine including dose interruptions and for up to 90 days after the last dose of durvalumab or azacitidine. Cessation of contraception after this point should be discussed with a responsible physician. 