[Successful Treatment with Pomalidomide, Bortezomib, and Dexamethasone in a Patient with Frail Refractory and Relapsed Multiple Myeloma with Extramedullary Disease]. - Oka S; Takeuchi S; Shiragami H; Shimazu Y; Nougawa M (Gan to kagaku ryoho. Cancer & chemotherapy, 2018)