4af64d5a   
   From: me@myplace.net   
      
   Harry schreef op 23-08-2011 19:56:   
   > Not a homework question. Clinical research. A patient may have one or   
   > more stents inserted during a procedure. He may also have a stent   
   > taken out. I am looking for patients who had more than one stent   
   > inserted during a procedure, and who did not have a stent taken out   
   > during the same procedure.   
   >   
   > harry   
      
      
   My bad, sorry.   
      
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