Thema
Journal Article
76
Economic Factors
22
Human Resources
22
Demographic Factors
21
English Abstract
21
Population
20
Developed Countries
19
Eastern Europe
18
Europe
18
Bulgaria
17
Labor Force
15
Population Dynamics
15
Review
14
Population Characteristics
11
Socioeconomic Factors
11
Chorionic Gonadotropin, beta Subunit, Human
8
Economic Development
8
EC 2.7.10.1
7
Membrane Proteins
6
144589-93-5
5
Age Factors
5
Behavior
5
Biomarkers
5
Comparative Study
5
Fertility
5
Macroeconomic Factors
5
Migration
5
PGF protein, human
5
Placenta Growth Factor
5
Research Methodology
5
Socioeconomic Status
5
Adult
4
Aged
4
Case Reports
4
Chorionic Gonadotropin
4
Environment
4
FFN protein, human
4
Fibronectins
4
Labor Force--women
4
Pregnancy Proteins
4
Proteins
4
Vascular Endothelial Growth Factor Receptor-1
4
9002-68-0
3
Blood Glucose
3
CA-125 Antigen
3
Data Collection
3
Employment Status
3
Follicle Stimulating Hormone
3
Geographic Factors
3
Glycated Hemoglobin A
3
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