•             Skip to main page content      
              
      Access keysNCBI HomepageMyNCBI HomepageMain ContentMain Navigation
                
          
      Home Page
          
        
              
            PubMed® comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.    
        
          
            
            
            
      Learn
                              About PubMed                                FAQs & User Guide                                Finding Full Text                  
            
            
            
      Find
                              Advanced Search                                Clinical Queries                                Single Citation Matcher                  
            
            
            
      Download
                              E-utilities API                                FTP                                Batch Citation Matcher                  
            
            
            
      Explore
                              MeSH Database                                Journals                                Legacy PubMed (available until at least 9/30/2020)                  
        
          
        
          
            
              
                Trending Articles        
              
                PubMed records with recent increases in activity        
                    
                    
                            See more trending articles                  
                
          
            
              Latest Literature      
            
              New articles from highly accessed journals      
                
        
        
                           
        Feedback
              
                                                  
      2. 
http://www.nhde20.cn |

http://m.nhde20.cn |

http://wap.nhde20.cn |

http://3g.nhde20.cn |

http://4g.nhde20.cn |

http://5g.nhde20.cn |

http://mobile.nhde20.cn |

http://vip.nhde20.cn |

http://ios.nhde20.cn |

http://anzhuo.nhde20.cn |

http://e91a8.nhde20.cn |

http://b99d.nhde20.cn |

http://a4e1.nhde20.cn |

http://721c3d.nhde20.cn/0e9.html |

http://721c3d.nhde20.cn/edc16.html |

http://721c3d.nhde20.cn/d9c0.html |

观看youtube视频