Refine My Results

Creation Date 

1. Before 1957  (7,703)
2. 1957 To 1972  (26,030)
3. 1973 To 1988  (77,098)
4. 1989 To 2005  (162,752)
5. After 2005  (335,675)
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New Records 

1. New From Last Week  (186)
2. New From Last Month  (1,170)
3. New From Last 3 Month  (4,725)
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Resource Type 

1. Articles  (575,210)
2. magazinearticle  (13,300)
3. Newspaper Articles  (4,468)
4. Reviews  (3,640)
5. Book Chapters  (3,077)
6. Thesises (postgraduate)  (2,423)
7. Reports  (2,242)
8. Books  (1,418)
9. Conference Proceedings  (656)
10. Web Resources  (623)
11. Newsletter Articles  (599)
12. Datasets  (234)
13. Government Documents  (147)
14. Archival Material / Manuscripts  (135)
15. Text Resources  (111)
16. References  (62)
17. Images  (40)
18. Videos  (22)
19. Databases  (11)
20. Other  (5)
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Subject 

1. Pregnancy  (563,646)
2. Female  (443,353)
3. Science & Technology  (402,901)
4. Life Sciences & Biomedicine  (384,521)
5. Humans  (370,013)
6. Adult  (155,437)
7. Biological And Medical Sciences  (111,863)
8. Animals  (108,579)
9. Male  (95,974)
10. Obstetrics & Gynecology  (89,338)
11. Medical Sciences  (85,600)
12. Infant, Newborn  (85,383)
13. Womens Health  (59,583)
14. Risk Factors  (53,679)
15. General & Internal Medicine  (51,429)
16. Medicine, General & Internal  (50,688)
17. Adolescent  (45,577)
18. Gynecology. Andrology. Obstetrics  (44,629)
19. Gestational Age  (38,557)
20. Public, Environmental & Occupational Health  (36,764)
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Databases 

1. MEDLINE  (449,219)
2. ProQuest Central  (275,540)
3. GFMER Free Medical Journals  (190,222)
4. PubMed Central  (177,868)
5. DOAJ Directory of Open Access Journals  (147,629)
6. ROAD: Directory of Open Access Scholarly Resources  (113,362)
7. HighWire Press (Free Journals)  (71,236)
8. ProQuest One Psychology  (35,486)
9. Springer Nature OA/Free Journals  (29,558)
10. Wiley Online Library Open Access  (29,332)
11. Journals@Ovid Open Access Journal Collection Rolling  (14,710)
12. Nature Free  (11,385)
13. Public Library of Science (PLoS)  (11,141)
14. IngentaConnect Free/Open Access Journals  (6,651)
15. Taylor & Francis Open Access  (6,503)
16. Coronavirus Research Database  (6,127)
17. African Journals Online (Open Access)  (5,878)
18. SciELO  (5,844)
19. SWEPUB Freely available online  (5,355)
20. Oxford Journals Open Access Collection  (4,751)
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Language 

1. English  (576,142)
2. Japanese  (48,033)
3. French  (11,285)
4. Portuguese  (8,232)
5. Spanish  (7,301)
6. German  (6,421)
7. Italian  (3,615)
8. Russian  (1,284)
9. Polish  (1,154)
10. Norwegian  (1,084)
11. Persian  (839)
12. Chinese  (827)
13. Korean  (676)
14. Turkish  (669)
15. Swedish  (609)
16. Croatian  (190)
17. Afrikaans  (164)
18. Czech  (147)
19. Serbian  (129)
20. Indonesian  (111)
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Journal Title 

1. Acta Obstetricia Et Gynecologica Scandinavica  (7,080)
2. Bjog : An International Journal Of Obstetrics And Gynaecology  (6,190)
3. Bmc Pregnancy And Childbirth  (6,498)
4. Bmj  (11,292)
5. British Medical Journal  (8,713)
6. Fertility And Sterility  (9,153)
7. Human Reproduction  (6,805)
8. Plos One  (9,936)
9. Prenatal Diagnosis  (6,759)
10. The Lancet  (10,438)
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