Thema
Pregnancy
Journal Article
1.021
Reproduction
823
Biology
587
Physiology
572
Family Planning
538
Research Methodology
508
Urogenital System
425
Genitalia
421
Genitalia, Female
421
Population
383
Demographic Factors
378
Contraception
346
Diseases
334
Age Factors
323
Uterus
320
Population Dynamics
318
Endocrine System
302
Fertility
298
Population Characteristics
297
Studies
267
Developed Countries
233
Female
229
Clinical Research
223
Abortion, Induced
211
Youth
209
Adolescents
206
Adolescents, Female
204
Fertility Control, Postconception
199
Pregnancy Outcomes
196
Pregnancy Complications
195
Contraceptive Agents, Female
192
Reproductive Behavior
191
Hormones
188
Adolescent Pregnancy
187
Developing Countries
185
Treatment
167
Americas
156
United States
147
North America
143
Comparative Study
137
Pregnancy, First Trimester
136
Parity
135
Contraceptive Agents
134
Northern America
132
Cervix
131
Research Support, Non-U.S. Gov't
131
Examinations And Diagnoses
126
Behavior
125
Uterine Effects
119
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