PubMed is a web-based medical literature search system developed by the National Center for Biotechnology Information of the U.S. National Library of Medicine. With powerful search and linking capabilities, PubMed is the world's most utilized free online database for finding medical literature. It contains abstracts and partial full texts of more than 4,600 important biomedical journals from over 70 countries and regions around the world, of which more than 80% have English abstracts or links to full text, and about 5% can be viewed for free. PubMed includes MEDLINE, PREMEDLINE and literature databases provided directly by publishers. The records in the PREMEDLINE database are marked with "PubMed-in process", which is a database composed of literature records that are being processed; the literature records provided directly by the publisher are marked with "PubMed-as Supplied by Publisher", and they transmitte records to PREMEDLINE every day. Once included in PreMEDLINE, they will be marked as "PubMed-in process" and transferred to MEDLINE after being indexed. 

The ProQuest search platform is a product of the ProQuest Information and Learning company which databases covering a wide range of fields such as business management, social and human sciences, science and technology, finance and taxation, and medicine. The following content ordered by the library can be accessed on the ProQuest search platform:  ABI/INFORM Collection‎ (1971 to present)  Business Market Research Collection‎ (1986 to present)  Health & Medical Collection  Periodicals Archive Online  Pharmaceutical News Index  ProQuest Dissertations & Theses Global A&I: The Humanities and Social Sciences Collection  ProQuest Dissertations & Theses Global A&I: The Sciences and Engineering Collection‎  Research Library 

A number of domestic libraries and literature collection units jointly purchase a certain number of full ProQuest dissertations (PDF format) every year to provide network sharing, that is, all member libraries participating in the joint subscription can share all the academic dissertations ordered by the whole group. As of 2018.5, the database has collected about 700,000 foreign doctoral and master's degree theses.  Download image of Thesis of ProQuest:  CALIS mirror http://pqdt.calis.edu.cn/   Mirror of Shanghai Jiaotong University http://pqdt.lib.sjtu.edu.cn/  Beijing Zhongke Mirror http://pqdt.bjzhongke.com.cn/  Use guide 

The Ovid search platform is provided by Ovid Technologies INC., which was founded in 1984 and acquired by Wolters Kluwer in November 1998, becoming a subsidiary of Kluwer. The platform provides users with a consistent search interface for bibliographic and abstract databases from many different sources. It contains more than 300 databases on humanities, social sciences, and science, including MEDLINE. All databases are connected through a CERNET dedicated line. The following items ordered by the library can be accessed on the Ovid search platform:  Books, which offers CABI e-books and reference books as well as LWW medical e-books.  Zhejiang University Full-text Journals (LWW Journals).  CAB Abstracts + Full Text is a collection of abstracts from more than 14,000 consecutive publications, scientific reports, books, conference papers, etc. published in more than 70 languages in more than 130 countries and regions around the world. Collection year: 1973-.  BIOSIS Previews（1994-2011） 

The New England Journal of Medicine (NEJM) is the world's most widely covered and influential medical journal. Its peer-reviewed original articles target doctors and people interested in medical practice and are widely cited in various medical journals. The journal section includes clinical medical imagery, review articles, editorials, newsletters, and case records at Massachusetts General Hospital (MGH). NEJM has an influence factor of 72.406, which is one of the highest in the world.   The New England Journal of Medicine (NEJM) has access to its current content through Ovid.  The journal on Ovid offers landmark research, clinical insights, and medical breakthroughs in more than 125 areas. NEJM manuscripts are evaluated through an extremely rigorous peer review and editorial process to ensure scientific accuracy, novelty, and importance.