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Creation Date 

1. Before 1993  (8)
2. 1993 To 1999  (11)
3. 2000 To 2006  (10)
4. 2007 To 2014  (23)
5. After 2014  (10)
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Subject 

1. Humans  (58)
2. Female  (56)
3. Maternal Mortality  (52)
4. Pregnancy  (51)
5. China - Epidemiology  (32)
6. Adult  (23)
7. Cause Of Death  (18)
8. China  (15)
9. Retrospective Studies  (14)
10. Postpartum Hemorrhage - Mortality  (12)
11. Pregnancy Complications - Mortality  (10)
12. Infant, Newborn  (10)
13. Maternal Health Services  (10)
14. Risk Factors  (8)
15. Infant Mortality  (8)
16. Maternal Mortality - Trends  (8)
17. Pregnancy Complications, Cardiovascular - Mortality  (7)
18. Young Adult  (7)
19. Embolism, Amniotic Fluid - Mortality  (6)
20. Pre-Eclampsia - Mortality  (5)
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Databases 

1. MEDLINE  (59)
2. DOAJ Directory of Open Access Journals  (4)
3. PubMed Central  (4)
4. GFMER Free Medical Journals  (3)
5. ProQuest Central  (3)
6. Hong Kong Journals Online  (2)
7. Coronavirus Research Database  (1)
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Journal Title 

1. Beijing Da Xue Xue Bao. Journal Of Peking University. Yi Xue Ban  (2)
2. Chung-Hua Fu Chʿan Kʿo Tsa Chih  (30)
3. Fa Yi Xue Za Zhi  (1)
4. Hong Kong Medical Journal  (2)
5. Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi  (3)
6. Sichuan Da Xue Xue Bao. Journal Of Sichuan University. Yi Xue Ban  (2)
7. Zhong Hua Yi Xue Za Zhi  (3)
8. Zhonghua Fu Chan Ke Za Zhi  (2)
9. Zhōnghuá Liúxíngbìng Zázhì  (10)
10. Zhōnghuá Yùfáng-Yīxué Zázhì  (6)
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