Struve-Christensen, E <br/><br/>
[Triflo respiratory exerciser for simple examination and self-training of respiration].  [electronic resource] 

 -  Ugeskrift for laeger  Apr 1980 
 - 1075-6 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article 
<br/><br/><label>ISSN: </label>0041-5782 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Respiratory Function Tests--instrumentation<br/>Respiratory Therapy--instrumentation<br/>Self-Help Devices