Per Anker Jensen                                                            
                                                
                        Abstract  677 |
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                                525
                                                                                                                                        | DOI 
                            
                                https://doi.org/10.3846/1648715X.2011.565868
                            
                                                                            
                                
                                Page 35-47
                            
                        
                                                    
                                2011-04-14
                            
                                            
                                         
                                     
  

