[Maintenance hemodialysis. III. Technological problems].
D001769:Blood; D005374:Filtration / Q000379:methods; D006464:Hemoperfusion / Q000379:methods; D006801:Humans; D010531:Peritoneal Dialysis, Continuous Ambulatory / Q000379:methods; D006435:Renal Dialysis / Q000379:methods*