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Creation Date 

1. Before 1957  (21,572)
2. 1957 To 1973  (78,057)
3. 1974 To 1990  (191,166)
4. 1991 To 2008  (528,046)
5. After 2008  (1,153,019)
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New Records 

1. New From Last Week  (81)
2. New From Last Month  (3,873)
3. New From Last 3 Month  (16,142)
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Resource Type 

1. Articles  (1,403,364)
2. Newsletter Articles  (174,272)
3. Newspaper Articles  (89,457)
4. Datasets  (77,108)
5. Images  (58,235)
6. Book Chapters  (47,701)
7. magazinearticle  (32,679)
8. Reviews  (30,154)
9. Books  (29,029)
10. Web Resources  (20,624)
11. Reports  (19,236)
12. Thesises (postgraduate)  (12,136)
13. Conference Proceedings  (4,822)
14. References  (3,475)
15. Text Resources  (2,716)
16. Archival Material / Manuscripts  (968)
17. Audio  (659)
18. Government Documents  (618)
19. Videos  (451)
20. Journals  (272)
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Subject 

1. Science & Technology  (872,270)
2. Humans  (804,238)
3. Life Sciences & Biomedicine  (786,185)
4. Age  (735,870)
5. Female  (638,136)
6. Male  (542,851)
7. Age Factors  (457,505)
8. Adult  (390,117)
9. Middle Aged  (337,052)
10. Aged  (292,077)
11. Adolescent  (245,869)
12. Child  (208,720)
13. Biological And Medical Sciences  (203,218)
14. Risk Factors  (178,994)
15. Medical Sciences  (162,180)
16. Social Sciences  (146,717)
17. Child, Preschool  (135,418)
18. Pregnancy  (126,731)
19. Age Groups  (125,072)
20. Sex Factors  (123,306)
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Databases 

1. ProQuest Central  (1,029,103)
2. MEDLINE  (892,908)
3. PubMed Central (Open access)  (325,093)
4. DOAJ Directory of Open Access Journals  (325,059)
5. Geneva Foundation Free Medical Journals at publisher websites  (319,305)
6. ROAD: Directory of Open Access Scholarly Resources  (254,477)
7. ProQuest One Psychology  (120,930)
8. HighWire Press (Free Journals)  (105,264)
9. PANGAEA  (75,279)
10. Springer Nature OA Free Journals  (67,294)
11. Europeana Collections  (64,505)
12. Wiley-Blackwell Open Access Collection  (56,095)
13. Education Resources Information Center (ERIC)  (46,107)
14. Open Access: Freely Accessible Journals by multiple vendors  (27,693)
15. Public Library of Science (PLoS) Journals Open Access  (26,969)
16. Nature出版集团开放获取期刊  (20,200)
17. JSTOR Early Journal Content  (19,106)
18. Coronavirus Research Database  (18,487)
19. Ebook Central - Academic Complete  (17,260)
20. Taylor & Francis (Open access)  (16,626)
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Language 

1. English  (1,837,395)
2. Japanese  (130,290)
3. French  (53,914)
4. German  (35,043)
5. Spanish  (18,297)
6. Russian  (17,289)
7. Polish  (15,526)
8. Portuguese  (11,171)
9. Italian  (8,091)
10. Chinese  (5,783)
11. Latin  (4,324)
12. Czech  (3,286)
13. Finnish  (2,966)
14. Dutch  (2,425)
15. Norwegian  (2,130)
16. Romanian  (2,128)
17. Danish  (2,109)
18. Swedish  (1,883)
19. Turkish  (1,875)
20. Croatian  (1,819)
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Journal Title 

1. Arxiv.Org  (7,879)
2. Bmj  (7,461)
3. Bmj Open  (5,334)
4. British Medical Journal  (5,155)
5. International Journal Of Environmental Research And Public Health  (8,136)
6. New York Times  (8,522)
7. Plos One  (24,558)
8. Scientific Reports  (5,073)
9. The Lancet  (5,548)
10. The Washington Post  (5,850)
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