What contraception precautions are recommended during and after treatment with Mylotarg (gemtuzumab ozogamicin)?

With Mylotarg (gemtuzumab ozogamicin), women of childbearing potential should avoid pregnancy, and these women and male partners of women of childbearing potential should use two effective contraception methods during treatment and for at least seven months (females) or four months (males) after the last dose.