Thema
Developed Countries
79
United Kingdom
79
Europe
78
Northern Europe
78
Journal Article
61
Family Planning
53
Population
43
Demographic Factors
42
Research Methodology
42
Contraception
36
Diseases
31
England
31
Research Support, Non-U.S. Gov't
29
Population Characteristics
27
Population Dynamics
27
Studies
27
Biology
24
Health
21
Age Factors
19
Research Report
19
Physiology
18
Contraceptive Methods
17
Fertility
17
News
16
Scotland
16
Behavior
15
Fertility Control, Postconception
15
Delivery Of Health Care
14
Abortion, Induced
13
Contraceptive Usage
13
Economic Factors
12
Programs
12
Reproductive Behavior
12
Youth
12
Measurement
11
Oral Contraceptives
11
Contraceptive Agents, Female
10
Organization And Administration
10
Adolescents
9
Contraceptives, Oral
9
Contraceptives, Oral, Combined
9
Examinations And Diagnoses
9
Incidence
9
Contraceptive Agents
8
Critique
8
Fertility Measurements
8
Health Services
8
Infections
8
Barrier Methods
7
Education
7
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