Temporal trends in the inclusion of patient-reported outcomes in heart failure randomized trials published in high-impact medical journals: a systematic bibliometric review  
                              
 
                                  Event:
                                  
                                    ESC Congress 2021 - The Digital Experience
                                  
 
                                  Topic:
                                  
                                    Trial Design
                                  
 
                                  Session:
                                  
                                    Research Methodology ePosters