I was a the 12th Annual UK Dialysis Conference here in Manchester last week where Professor Ikuto Masakane (Yamagata, Japan) gave us an insight into dialysis in Japan. His talk mainly centred around dialyser membranes as it happens.
Found one of his abstracts here which is pretty much what his talk was about:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4813821/
Ian Wilde