Refine My Results

Creation Date 

1. Before 1958  (101,646)
2. 1958 To 1973  (152,319)
3. 1974 To 1989  (1,021,116)
4. 1990 To 2006  (3,176,617)
5. After 2006  (8,084,618)
6. More options 

New Records 

1. New From Last Month  (393,176)
2. New From Last 3 Month  (393,313)
3. More options 

Resource Type 

1. Patents  (12,530,022)
2. Articles  (21,004)
3. magazinearticle  (573)
4. Books  (529)
5. Newsletter Articles  (372)
6. Book Chapters  (114)
7. Newspaper Articles  (95)
8. Reports  (88)
9. Conference Proceedings  (48)
10. Web Resources  (47)
11. Thesises (postgraduate)  (24)
12. Reviews  (17)
13. References  (7)
14. Text Resources  (5)
15. Archival Material / Manuscripts  (3)
16. Videos  (1)
17. Images  (1)
18. More options 

Subject 

1. Human Necessities  (12,530,022)
2. Medical Or Veterinary Science  (12,530,022)
3. Preparations For Medical, Dental, Or Toilet Purposes  (5,930,274)
4. Chemistry  (3,653,236)
5. Metallurgy  (3,653,129)
6. Specific Therapeutic Activity Of Chemical Compounds Ormedicinal Preparations  (3,565,417)
7. Organic Chemistry  (2,766,131)
8. Diagnosis  (2,738,513)
9. Surgery  (2,738,425)
10. Identification  (2,738,080)
11. Heterocyclic Compounds  (1,463,112)
12. Devices For Introducing Media Into, Or Onto, The Body  (1,351,341)
13. Devices For Producing Or Ending Sleep Or Stupor  (1,351,341)
14. Devices For Transducing Body Media Or For Taking Media Fromthe Body  (1,351,341)
15. Prostheses  (1,299,740)
16. First-Aid Kits  (1,299,656)
17. Filters Implantable Into Blood Vessels  (1,299,656)
18. Bandages, Dressings Or Absorbent Pads  (1,299,656)
19. Fomentation  (1,299,656)
20. More options 

Databases 

1. esp@cenet  (12,530,022)
2. MEDLINE  (20,134)
3. ProQuest Central  (10,903)
4. Geneva Foundation Free Medical Journals at publisher websites  (6,198)
5. DOAJ Directory of Open Access Journals  (6,107)
6. PubMed Central  (6,091)
7. ROAD: Directory of Open Access Scholarly Resources  (4,870)
8. Public Library of Science (PLoS) Journals Open Access  (1,780)
9. SpringerOpen  (1,378)
10. HighWire Press (Free Journals)  (1,180)
11. ProQuest One Psychology  (1,160)
12. Coronavirus Research Database  (1,033)
13. Wiley-Blackwell Open Access Collection  (550)
14. Open Knowledge Repository  (409)
15. Education Resources Information Center (ERIC)  (293)
16. Nature Free  (236)
17. IngentaConnect Backfiles  (206)
18. Ebook Central - Academic Complete  (198)
19. Journals@Ovid Open Access Journal Collection Rolling  (183)
20. BMJ Open Access Journals  (161)
21. More options 

Language 

1. English  (10,508,795)
2. French  (2,757,946)
3. Chinese  (2,583,474)
4. German  (1,717,778)
5. Japanese  (556,691)
6. Korean  (504,499)
7. Russian  (251,888)
8. Danish  (100,501)
9. Spanish  (91,554)
10. Portuguese  (75,915)
11. Norwegian  (61,052)
12. Finnish  (56,258)
13. Swedish  (54,765)
14. Polish  (52,725)
15. Italian  (40,340)
16. Ukrainian  (31,746)
17. Hungarian  (24,772)
18. Hebrew  (22,734)
19. Slovenian  (19,476)
20. Dutch  (19,430)
21. More options 

Journal Title 

1. American Journal Of Infection Control  (294)
2. Bmc Public Health  (272)
3. Bmj  (181)
4. Gigiena I Sanitarija  (625)
5. Infection Control And Hospital Epidemiology  (223)
6. International Journal Of Environmental Research And Public Health  (557)
7. Journal Of Food Protection  (240)
8. Plos Neglected Tropical Diseases  (282)
9. Plos One  (1,394)
10. The Lancet  (211)
11. More options