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1. Humans  (76,290)
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Databases 

1. MEDLINE  (76,358)
2. ProQuest Central  (12,581)
3. Geneva Foundation Free Medical Journals at publisher websites  (10,606)
4. PubMed Central  (6,595)
5. DOAJ Directory of Open Access Journals  (4,884)
6. HighWire Press (Free Journals)  (4,434)
7. ProQuest One Psychology  (2,173)
8. Education Resources Information Center (ERIC)  (1,629)
9. ROAD: Directory of Open Access Scholarly Resources  (1,497)
10. Wiley-Blackwell Titles (Open access)  (1,272)
11. ERIC - Full Text Only (Discovery)  (1,071)
12. JSTOR Early Journal Content Free  (460)
13. African Journals Online (Open Access)  (456)
14. Sabinet African Journals Open Access Collection  (382)
15. IngentaConnect Free/Open Access Journals  (378)
16. Gallica Periodicals  (302)
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18. Open Access: Nature Open Access  (200)
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20. Journals@Ovid Open Access Journal Collection Rolling  (141)
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1. English  (46,034)
2. German  (8,307)
3. Russian  (7,332)
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1. Bmj  (879)
2. British Medical Journal  (932)
3. Jama : The Journal Of The American Medical Association  (490)
4. Klinicheskaia Meditsina  (466)
5. Medical Journal Of Australia  (484)
6. Polski Tygodnik Lekarski  (598)
7. Sovetskaia Meditsina  (409)
8. The Lancet  (918)
9. The New England Journal Of Medicine  (524)
10. Vrachebnoe Delo  (636)
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