Date:   4/23/2012 6:06:12 PM ( 13 y ago)
Hits:   2,011
URL:   https://www.curezone.org/forums/fm.asp?i=1932618

Why would it need a service? I've only been using it for a few months, for about an hour a day.

I thought maybe the oxygen concentrator might be putting out a lower concentration of oxygen than it should.
 

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