Author: Peter G. van der Velden; Miquelle Marchand; Boukje Cuelenaere; Marcel Das
                    Title: Pre-outbreak determinants of perceived risks of corona infection and preventive measures taken. A prospective population-based study  Document date: 2020_4_6
                    ID: 9309aig5_7
                    
                    Snippet: Ethical approval and informed consent.....
                    
                    
                    
                     
                    
                    
                    
                    
                        
                            
                                Document: Ethical approval and informed consent
 
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