Refine My Results

Creation Date 

1. Before 1957  (8,280)
2. 1957 To 1973  (333,718)
3. 1974 To 1990  (1,054,166)
4. 1991 To 2008  (2,021,752)
5. After 2008  (2,796,529)
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New Records 

1. New From Last Week  (1,275)
2. New From Last Month  (10,690)
3. New From Last 3 Month  (34,269)
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Resource Type 

1. Articles  (5,683,553)
2. Newsletter Articles  (175,996)
3. Newspaper Articles  (88,336)
4. magazinearticle  (60,525)
5. Book Chapters  (50,333)
6. Reports  (29,134)
7. Books  (26,944)
8. Web Resources  (23,878)
9. Reviews  (18,742)
10. Thesises (postgraduate)  (15,568)
11. Conference Proceedings  (7,766)
12. Text Resources  (6,444)
13. Images  (3,068)
14. References  (2,480)
15. Audio  (970)
16. Datasets  (962)
17. Government Documents  (643)
18. Videos  (546)
19. Archival Material / Manuscripts  (195)
20. Journals  (131)
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Subject 

1. Humans  (5,369,669)
2. Adult  (5,139,874)
3. Female  (4,114,518)
4. Male  (3,888,418)
5. Science & Technology  (3,788,168)
6. Life Sciences & Biomedicine  (3,680,338)
7. Middle Aged  (2,974,390)
8. Aged  (1,857,329)
9. Adolescent  (1,449,816)
10. Biological And Medical Sciences  (1,348,483)
11. Medical Sciences  (1,196,390)
12. Young Adult  (898,948)
13. Child  (685,372)
14. Aged, 80 And Over  (572,597)
15. Retrospective Studies  (483,668)
16. Social Sciences  (440,562)
17. Risk Factors  (436,910)
18. Treatment Outcome  (432,000)
19. Surgery  (422,478)
20. Neurosciences & Neurology  (417,775)
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Databases 

1. MEDLINE  (5,348,484)
2. ProQuest Central  (2,064,302)
3. GFMER Free Medical Journals  (1,180,970)
4. PubMed Central  (897,602)
5. DOAJ Directory of Open Access Journals  (754,770)
6. ROAD: Directory of Open Access Scholarly Resources  (515,081)
7. HighWire Press (Free Journals)  (376,676)
8. ProQuest One Psychology  (347,152)
9. Wiley-Blackwell Titles (Open access)  (207,917)
10. Springer Open Access Journals  (158,628)
11. Education Resources Information Center (ERIC)  (117,340)
12. Nature Free  (74,207)
13. IngentaConnect Free/Open Access Journals  (73,560)
14. Journals@Ovid Open Access Journal Collection Rolling  (67,755)
15. PLoS (Open access)  (63,534)
16. Open Access: Freely Accessible Journals by multiple vendors  (44,090)
17. Taylor & Francis Open Access  (42,583)
18. ERIC - Full Text Only (Discovery)  (30,900)
19. SWEPUB Freely available online  (27,310)
20. JSTOR Early Journal Content  (26,420)
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Language 

1. English  (5,326,418)
2. Japanese  (612,765)
3. German  (154,472)
4. Russian  (146,407)
5. French  (142,897)
6. Spanish  (84,413)
7. Chinese  (74,959)
8. Italian  (56,388)
9. Polish  (48,749)
10. Portuguese  (47,882)
11. Czech  (15,954)
12. Danish  (11,436)
13. Dutch  (9,938)
14. Norwegian  (8,161)
15. Hungarian  (6,591)
16. Romanian  (6,585)
17. Swedish  (5,971)
18. Croatian  (5,867)
19. Bulgarian  (5,377)
20. Serbian  (5,161)
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Journal Title 

1. Bmj  (20,503)
2. British Medical Journal  (14,317)
3. Cancer  (17,860)
4. International Journal Of Environmental Research And Public Health  (13,970)
5. Neurology  (14,070)
6. Plos One  (59,099)
7. Scientific Reports  (15,878)
8. The Journal Of Clinical Endocrinology And Metabolism  (17,275)
9. The Lancet  (23,329)
10. The New England Journal Of Medicine  (13,859)
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