23. Not provided consent to the following contraceptive measures. Patients should avoid sexual intercourse with sexual partners or should use the contraceptive methods as described below in the following time periods: for male patients before case registration until 6 months after the end of administration of the study drug; for female patients with menstruation before case registration until the second menstrual period is confirmed after the end of administration; for menopausal women before case registration until 2 months after the end of administration.