京都府立医科大学 木元弥生 Int J Hematol. 2018 May;107(5):541-550.

Pomalidomide with or without dexamethasone for relapsed/refractory multiple myeloma in Japan:
a retrospective analysis by the Kansai Myeloma Forum.

https://pubmed.ncbi.nlm.nih.gov/29380179/