1. 
   BTLS
   Basic Trauma Life Support [Now: International Trauma Life Support]
   Found op http://www.encyclo.co.uk/local/20895
   
   
2. 
   BTLS
   basic trauma life support.
   Found op http://www.encyclo.co.uk/local/21001
   
   
3. 
   btls
   1) Basic trauma life support
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/btls/1
   
   

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