A review finds that multicenter studies face substantial challenges but strategies exist to achieve Institutional Review Board approval.
                             
                            
                            
                                
                            
                            
                                
                            
                            
                            
                                
                                    
                                            
    Greene SM, Geiger AM. A review finds that multicenter studies face substantial challenges but strategies exist to achieve Institutional Review Board approval. J Clin Epidemiol. 2006 Aug; 59(8):784-90.