<qa>  What is the oral dexamethasone IV?Patients receive vincristine IV and doxorubicin IV continuously on days 1-4 and oral dexamethasone on days 1-4, 9-12, and 17-20. Patients also receive low-dose oral thalidomide daily on days 1-28. Treatment repeats every 4 weeks for 4-6 courses in the absence of disease progression. 