| http://www.w3.org/ns/prov#value | - outlet 722, a fan and blower gas inlet 724, replaceable HEPA filter 726, a power supply module 728 comprising a rechargeable battery, transformer, fuse and other related components, a power cord 730 for either AC or 12V DC current; an adjustable airway resistance simulator and breathing circuit 734 configured such that the user can adjust the pressure output; an airway resistance simulator adjust
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